{"product_id":"f8x-apex-z-cat-back-exhaust","title":"APEX Z EXHAUST™ – F8X M3\/M4 Cat-Back System","description":"\u003cp\u003e\u003cspan\u003e*Built to order* 3-4 week turnaround time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003eUnleash the Sound the S55 Was Always Meant to Have\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cspan\u003eTrue Spec Apex Z Exhaust™\u003c\/span\u003e\u003cspan\u003e is not just another F8X exhaust system—it’s a complete reimagining of the S55 sound experience. Designed around our signature \u003c\/span\u003e\u003cspan\u003eApex Z-Pipe architecture\u003c\/span\u003e\u003cspan\u003e, this system transforms the F80 M3, F82\/F83 M4 from the raspy, metallic tone the platform is known for into a deep, exotic, high-pitched symphony that stands in a class of its own.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAfter countless hours of design, testing, and refinement, we created an exhaust that delivers the perfect balance of aggression, tone, and drivability. The result is a uniquely smooth, exotic exhaust note with incredible top-end character, zero drone, and virtually no rasp.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhether you’re carving canyon roads, attacking a race track, or simply enjoying a backroad drive, the Apex Z Exhaust creates an experience that feels special every time you start the car.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSignature Apex Z-Pipe Technology\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt the heart of the system is our proprietary \u003c\/span\u003e\u003cspan\u003eApex Z-Pipe crossover design\u003c\/span\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnlike traditional X-pipes and equal-length systems, the Apex Z-Pipe was engineered to optimize exhaust pulse scavenging while creating a smoother, more exotic sound signature. The result is:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e✓ Reduced rasp and harsh frequencies\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003e✓ Increased exhaust velocity and flow efficiency\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003e✓ Richer midrange tone\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003e✓ Exotic high-rpm scream\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003e✓ Unique sound unlike any other F8X exhaust on the market\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis is the defining characteristic that gives the Apex Z Exhaust its unmistakable voice.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSound Characteristics\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValves Open\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eExotic, high-pitched tone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAggressive race-inspired character\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCrisp throttle response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncredible top-end scream\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVirtually no rasp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTrack-ready presence\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eValves Closed\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRefined and comfortable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePerfect for daily driving\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced cabin volume\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNo unwanted drone\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOEM-like cruising comfort\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncluded Valve Controller\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery Apex Z Exhaust includes a \u003c\/span\u003e\u003cspan\u003ewireless valve controller\u003c\/span\u003e\u003cspan\u003e at no additional cost.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTake complete control of your exhaust with the touch of a button:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eOpen valves anytime\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClose valves anytime\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRetain factory valve operation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSwitch between modes instantly\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWhether you want maximum volume or a more refined driving experience, the choice is always yours.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eProprietary Apex Z-Pipe Design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePremium T304 Stainless Steel Construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMandrel-Bent Tubing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTIG Welded Throughout\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated Valved Muffler System\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWireless Valve Controller Included\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDirect Bolt-On Installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatible with Factory or Aftermarket Downpipes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesigned for F80 M3, F82 M4, and F83 M4\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMade for Enthusiasts Who Demand Something Different\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe True Spec Difference\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe F8X platform has no shortage of exhaust options—but none sound quite like the Apex Z.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhere others chase volume, we focused on creating an exhaust note that feels exotic, refined, and unforgettable. The Apex Z Exhaust delivers the high-frequency scream enthusiasts love while eliminating the harsh rasp that has defined so many S55 systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis isn’t just louder.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt’s \u003c\/span\u003e\u003cspan\u003edifferent.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt’s the sound that makes people turn around, ask what exhaust you’re running, and stay to hear one more rev.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eApex Z Exhaust™\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExotic. Refined. Unmistakable.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*Modify with Purpose.*™\u003c\/span\u003e\u003c\/p\u003e","brand":"True Spec US","offers":[{"title":"F80 M3 \/ Resonated","offer_id":47587761422521,"sku":null,"price":2599.0,"currency_code":"USD","in_stock":true},{"title":"F82 M4 \/ Resonated","offer_id":47587761455289,"sku":null,"price":2599.0,"currency_code":"USD","in_stock":true},{"title":"F80 M3 \/ Non-Resonated","offer_id":47588062593209,"sku":null,"price":2599.0,"currency_code":"USD","in_stock":true},{"title":"F82 M4 \/ Non-Resonated","offer_id":47588062625977,"sku":null,"price":2599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0705\/4907\/8201\/files\/1D94B0FF-ADD8-40F7-A344-EDA638B5ABA7.png?v=1781462942","url":"https:\/\/truespec.us\/products\/f8x-apex-z-cat-back-exhaust","provider":"True Spec US","version":"1.0","type":"link"}