{"title":"Best Sellers","description":"\u003cp\u003eThe QHCE lineup that started it all — our most popular catbacks for the platforms that drive the brand.\u003c\/p\u003e","products":[{"product_id":"bmw-540i-g30-catback","title":"QHCE 540i Catback — BMW G30 530i \/ 540i (B58)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eThe G30 is the most polished 5-Series ever built. The B58 under the hood is criminally muted from the factory. This catback fixes that.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eG30 (sedan), G31 (touring, EU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2017 – 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eB58B30M1 \/ B58B30O1 — 3.0L inline-six turbo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003e530i, 540i, 540i xDrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM, 3-bolt — bolt-on, no cutting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eB58 with the valves open is one of the best-sounding inline-sixes ever made. Closed: subtle deepening over stock, civil at cruise. Open: factory-supercar growl on cold starts, gear-shift cracks on WOT, throttle-blip burble on lift.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573193916,"sku":"QHCE-540I-G30","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_ed8621e2-6056-4c9b-90bb-6793b628657f.jpg?v=1781362100"},{"product_id":"bmw-m340i-m440i-g20-g22-catback","title":"QHCE M340i \/ M440i Catback — G20 \/ G22 (B58)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eThe M340i and M440i G20\/G22 with the B58 already sound great. We just take the volume and personality up a few notches without breaking the OEM character.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eG20 (M340i sedan), G22 (M440i coupe), G23 (cab)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2019 – 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eB58B30M1 — 3.0L inline-six turbo, 382 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eM340i \/ M340i xDrive \/ M440i \/ M440i xDrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — direct bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eB58 in M-trim cars already does a real exhaust note. Closed: barely louder than stock at idle, smoother cruise. Open: snarling six-cylinder voice, crackle on lift, hard pops on every up-shift in Sport+.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573226684,"sku":"QHCE-M340I-M440I","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_0ae5c5c4-eea2-45a4-9f59-d3b54149c068.jpg?v=1780481133"},{"product_id":"bmw-340i-440i-f30-f32-catback","title":"QHCE 340i \/ 440i Catback — F30 \/ F32 \/ F36 (B58 \u0026 N55)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eThe F-chassis 3-Series with B58 (340i) and N55 (340i \/ 440i early) are factory-muted sleepers. This catback wakes them up to match the M-car siblings.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eF30 (sedan), F32 (coupe), F36 (Gran Coupe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2013 – 2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngines\u003c\/th\u003e\n\u003ctd\u003eB58B30M1 (2016+ 340i) \/ N55B30 (2013-2015 335i, 2014-2016 435i, 2014-2018 440i)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003e340i, 340i xDrive, 440i, 440i xDrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — fits both B58 and N55 with no adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eF-chassis cars have the room for the exhaust to breathe more than the newer G-chassis. Closed: meaningful step up from stock. Open: snarls hard on cold start, sustained low growl on highway, factory-M-style burble on overrun.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573259452,"sku":"QHCE-340I-440I-F","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_7b744d22-4092-4964-ad1c-2f1513af4def.jpg?v=1781362044"},{"product_id":"bmw-m3-m4-g80-g82-catback","title":"QHCE M3 \/ M4 Catback — G80 \/ G82 (S58)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eS58 in the G80\/G82 is the meanest inline-six BMW ever built. We let it speak.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eG80 (M3 sedan), G82 (M4 coupe), G83 (cab)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2021 – 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eS58B30T0 — 3.0L twin-turbo, 473 \/ 503 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eM3, M3 Competition, M4, M4 Competition, xDrive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eReal M-car sound. Closed: barely louder than OEM, civil cruise. Open: aggressive low burble at idle, savage WOT bark, factory-style upshift crackle in Sport+, deep down-shift rev-match.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573292220,"sku":"QHCE-M3-M4-G","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_9c3730db-4a59-45df-ba6d-56850bc82938.jpg?v=1780826008"},{"product_id":"bmw-m3-m4-f80-f82-catback","title":"QHCE M3 \/ M4 Catback — F80 \/ F82 \/ F83 (S55)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eF80 M3 \/ F82 M4 with the S55 is a classic — they sound mean but BMW kept them tame from the factory. This catback uncorks the personality.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eF80 (M3 sedan), F82 (M4 coupe), F83 (cab)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2014 – 2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eS55B30 — 3.0L twin-turbo, 425 \/ 444 hp (CS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eM3, M3 Competition, M3 CS, M4, M4 Competition, M4 CS, M4 GTS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — direct bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eS55 has a unique voice — slightly metallic, hard-edged inline-six. Closed: meaningful deeper note than stock at idle, controlled cruise. Open: snarling top-end, popping shifts, deep WOT growl, full character.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Carbon Fiber \/ Stainless","offer_id":46861573324988,"sku":"QHCE-M3-M4-F-CFS","price":1200.0,"currency_code":"USD","in_stock":true},{"title":"Carbon Fiber \/ Gloss Black","offer_id":47118227308732,"sku":"QHCE-M3-M4-F-CFB","price":1200.0,"currency_code":"USD","in_stock":true},{"title":"Carbon Fiber \/ Gold","offer_id":47118227341500,"sku":"QHCE-M3-M4-F-CFG","price":1200.0,"currency_code":"USD","in_stock":true},{"title":"Full Stainless Steel","offer_id":47118227374268,"sku":"QHCE-M3-M4-F-SS","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/qhce-f80-carbonai-hero.jpg?v=1783982688"},{"product_id":"audi-a4-a5-b9-catback","title":"QHCE Audi A4 \/ A5 Catback — B9 \/ B9.5 Quattro (2.0T)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eB9-platform A4 and A5 with the 2.0T are restrained from the factory. This catback delivers a proper turbo-four growl without affecting the EA888's reliability.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eB9 \/ B9.5 (A4 sedan, A5 coupe, A5 Sportback)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2017 – 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eEA888 Gen 3 \/ 3B — 2.0L TFSI, 220-261 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eA4 40 \/ 45 TFSI Quattro, A5 40 \/ 45 TFSI Quattro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM Quattro all-wheel-drive flange — direct bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eClosed: tighter, punchier than stock without being loud. Open: deep four-cylinder growl, hard pop on shifts, full character at WOT.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573357756,"sku":"QHCE-AUDI-A4-A5-B9","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_d4aa3870-b217-4701-82a5-d3d6a145ce7a.jpg?v=1780481196"},{"product_id":"lexus-is-catback","title":"QHCE Lexus IS Catback — IS250 \/ IS300 \/ IS350 (2013-2021)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eThe 3IS Lexus IS chassis was a missed opportunity from Lexus — beautiful platform, conservative exhaust note. This catback gives all three engine options a proper voice.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003e3IS (IS250, IS300, IS350)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2013 – 2021 (3IS), partial 2022 fit available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngines\u003c\/th\u003e\n\u003ctd\u003e2GR-FSE (IS350) \/ 8AR-FTS (IS300 2.0T) \/ 4GR-FSE (IS250)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eAll IS250, IS300, IS300 AWD, IS350, IS350 F Sport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eLexus inline-six and 2.0T are smooth from the factory. Closed: subtle bass-bump over stock. Open: deep growl at idle, refined V6 voice on WOT (IS350), turbo-flutter on lift (IS300).\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573390524,"sku":"QHCE-LEXUS-IS","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_d807e052-221d-4a01-89ef-74ae4c0707a7.jpg?v=1781383556"},{"product_id":"infiniti-q50-q60-vr30-catback","title":"QHCE Q50 \/ Q60 Catback — Infiniti 3.0T VR30","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eThe VR30 twin-turbo V6 in the Q50 and Q60 is genuinely fast and genuinely silent from the factory. This catback lets the V6 sound like a V6.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eQ50 (sedan), Q60 (coupe)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2016 – 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eVR30DDTT — 3.0L twin-turbo V6, 300 \/ 400 hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003e3.0t Luxe, 3.0t Sport, Red Sport 400, Red Sport 400 ProActive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — bolt-on, no welding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eClosed: bass-heavy improvement over stock, civil cruise. Open: aggressive twin-turbo V6 voice, deep pop on lift, snarling WOT, factory-supercar character.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573423292,"sku":"QHCE-Q50-Q60-VR30","price":2099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_main_6b200fc5-0a0f-428e-88f4-9e4eba33b4e8.jpg?v=1780481265"},{"product_id":"mercedes-c-class-w205-catback","title":"QHCE C-Class Catback — Mercedes W205 (C200 \/ C250 \/ C300)","description":"\u003cdiv class=\"qhce-prod\"\u003e\n\u003cp class=\"qhce-prod-intro\"\u003eW205 C-class with the four-cylinder feels under-served by Mercedes — the C-class deserves a real voice. This catback delivers without the cost of going AMG.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eFITMENT\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003ctd\u003eW205 (sedan), C205 (coupe), A205 (cab), S205 (wagon EU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003ctd\u003e2015 – 2023\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngines\u003c\/th\u003e\n\u003ctd\u003eM274 (2.0L turbo, C300) \/ M264 (2.0L turbo mild-hybrid, C300 2019+) \/ M270 (1.6L turbo, C200\/C250)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTrims\u003c\/th\u003e\n\u003ctd\u003eC200, C250, C300 \/ C300 4Matic, C300 AMG-Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMid-pipe flange\u003c\/th\u003e\n\u003ctd\u003eOEM 3-bolt — direct bolt-on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSOUND PROFILE\u003c\/h3\u003e\n\u003cp\u003eClosed: meaningful deepening of stock W205 sound, no cabin drone. Open: rorty turbo-four character, factory-AMG-style burble on overrun, snarl on cold start.\u003c\/p\u003e\n\u003cdiv class=\"qhce-prod-sound\"\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eSTOCK OEM\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:40%;background:#666\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~75 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES CLOSED\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:50%;background:#888\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~80 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-sound-row\"\u003e\n\u003cspan class=\"qhce-prod-sound-label\"\u003eVALVES OPEN\u003c\/span\u003e\u003cdiv class=\"qhce-prod-sound-bar\"\u003e\u003cdiv class=\"qhce-prod-sound-fill\" style=\"width:88%;background:#C8102E\"\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cspan class=\"qhce-prod-sound-val\"\u003e~95 dB\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-sound-note\"\u003eMeasured at 50 ft, idle, ambient temp. Highway WOT 5-10 dB higher.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eMATERIAL SPECS\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipes:\u003c\/strong\u003e 304 stainless steel, 1.5mm wall thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelds:\u003c\/strong\u003e TIG-welded, back-purged for OEM-grade finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMuffler chamber:\u003c\/strong\u003e Multi-stage with electronic valve actuator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTips:\u003c\/strong\u003e Carbon fiber wrapped, 304 stainless inner, QHCE laser-engraved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat shielding:\u003c\/strong\u003e Spot-welded stainless wrap on the muffler section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWHAT’S IN THE BOX\u003c\/h3\u003e\n\u003cul class=\"qhce-prod-list\"\u003e\n\u003cli\u003eFull catback assembly (mid-pipe + muffler + tailpipes)\u003c\/li\u003e\n\u003cli\u003ePre-installed electronic valve actuators\u003c\/li\u003e\n\u003cli\u003eWireless remote (glovebox-friendly fob)\u003c\/li\u003e\n\u003cli\u003eKey-chain switch (keyring-sized)\u003c\/li\u003e\n\u003cli\u003eIn-cabin controller (3M-mountable)\u003c\/li\u003e\n\u003cli\u003eAll OEM-spec hardware + gaskets + clamps\u003c\/li\u003e\n\u003cli\u003ePrinted installation guide (also linked digitally)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eINSTALLATION\u003c\/h3\u003e\n\u003cp\u003e2-3 hours in a home garage with a floor jack and stands. 45 minutes on a lift. Standard hand tools — no welding, no cutting, no tuning. New gaskets and OEM-spec clamps are included in the kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eSHIPPING \u0026amp; LEAD TIME\u003c\/h3\u003e\n\u003ctable class=\"qhce-prod-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eProduction\u003c\/th\u003e\n\u003ctd\u003e~7 business days — every kit is built-to-order, TIG-welded and QC'd before it leaves the floor.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFreight\u003c\/th\u003e\n\u003ctd\u003e4–5 business days, continental US, fully insured + tracked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal time to door\u003c\/th\u003e\n\u003ctd\u003eRoughly 2.5 weeks from checkout to delivery.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping cost\u003c\/th\u003e\n\u003ctd\u003eFree on orders $1,000+ in the continental US. AK \/ HI \/ international quoted at checkout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003ctd\u003eYou'll get a tracking number the moment the kit ships. Any production delays are flagged in writing the same day.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"qhce-prod-spec-block\"\u003e\n\u003ch3\u003eWARRANTY\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eLifetime structural warranty\u003c\/strong\u003e on the pipes — cracks, weld failures, rust-through, we cover it. \u003cstrong\u003e2 years\u003c\/strong\u003e on the electronic valve actuators and remote system. \u003cstrong\u003e90 days\u003c\/strong\u003e on cosmetic finish (carbon fiber tips and laser engraving).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"qhce-prod-legal\"\u003eFor off-road \/ track use only. Not legal for highway use in all 50 states. Buyer assumes responsibility for compliance with local emissions and noise regulations.\u003c\/p\u003e\n\u003c\/div\u003e\u003cstyle\u003e\n.qhce-prod{font-family:var(--font-body--family);color:#e6e6e6;line-height:1.6;font-size:1rem}\n.qhce-prod-intro{font-size:1.15rem;line-height:1.5;color:#fff;border-left:3px solid #C8102E;padding-left:18px;margin:0 0 32px 0;font-weight:400}\n.qhce-prod-spec-block{margin:0 0 36px 0}\n.qhce-prod h3{font-family:var(--font-heading--family);font-size:1.2rem;letter-spacing:0.08em;text-transform:uppercase;color:#fff;margin:0 0 14px 0;padding-bottom:6px;border-bottom:2px solid #C8102E;display:inline-block}\n.qhce-prod-table{width:100%;border-collapse:collapse;margin:8px 0 0 0}\n.qhce-prod-table th{font-family:var(--font-heading--family);font-size:0.85rem;letter-spacing:0.08em;text-transform:uppercase;color:#999;text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid #ffffff14;width:35%;font-weight:400;vertical-align:top}\n.qhce-prod-table td{padding:10px 0;border-bottom:1px solid #ffffff14;color:#fff;font-size:0.95rem}\n.qhce-prod-list{padding:0;margin:8px 0 0 0;list-style:none}\n.qhce-prod-list li{padding:8px 0 8px 24px;position:relative;font-size:0.95rem;color:#cccccc}\n.qhce-prod-list li::before{content:\"\";position:absolute;left:0;top:14px;width:6px;height:6px;background:#C8102E;transform:rotate(45deg)}\n.qhce-prod-list strong{color:#fff;font-weight:600}\n.qhce-prod-sound{margin:16px 0 0 0;padding:18px;background:#141414;border-left:2px solid #C8102E}\n.qhce-prod-sound-row{display:grid;grid-template-columns:140px 1fr 70px;gap:12px;align-items:center;padding:6px 0}\n.qhce-prod-sound-label{font-family:var(--font-heading--family);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;color:#999}\n.qhce-prod-sound-bar{height:8px;background:#0a0a0a;overflow:hidden}\n.qhce-prod-sound-fill{height:100%}\n.qhce-prod-sound-val{font-family:var(--font-heading--family);font-size:0.85rem;color:#fff;text-align:right;letter-spacing:0.05em}\n.qhce-prod-sound-note{font-size:0.8rem;color:#666;margin:12px 0 0 0}\n.qhce-prod-legal{margin:32px 0 0 0;padding:14px 16px;background:#141414;border:1px solid #ffffff14;font-size:0.8rem;color:#999;letter-spacing:0.02em}\n@media (max-width:640px){.qhce-prod-sound-row{grid-template-columns:1fr;gap:4px;padding:10px 0}.qhce-prod-sound-bar{height:6px}}\n\u003c\/style\u003e","brand":"QHCE","offers":[{"title":"Default Title","offer_id":46861573456060,"sku":"QHCE-W205-C","price":1200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/8904\/5692\/files\/01_w205.jpg?v=1780481699"}],"url":"https:\/\/qhcemotors.com\/collections\/best-sellers.oembed","provider":"QHCE","version":"1.0","type":"link"}