{"product_id":"bmw-f80-m3-f82-m4-valved-catback-exhaust-system","title":"BMW F80 M3 \/ F82 M4 Valved Catback Exhaust System","description":"\u003cp\u003e\u003cstrong\u003eBMW F80 M3 \/ F82 M4 Valved Catback Exhaust System $1,899.99\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEngineered for drivers who don't just want performance—they demand presence. This valved catback exhaust system for the F80 M3 and F82 M4 transforms the S55 twin-turbo inline-six into something sharper, louder, and unmistakably yours.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBMW F80 M3\u003c\/li\u003e\n\u003cli\u003eBMW F82 M4 (Coupe \u0026amp; Convertible)\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on, no cutting or modification required\u003c\/li\u003e\n\u003cli\u003eCompatible with factory valve controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eSound Character\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis system is built to amplify what makes the S55 special—its high-strung, turbocharged inline-six—without compromising refinement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValves Closed: Deep, controlled tone with a refined growl. Minimal drone, ideal for cruising or daily driving.\u003c\/li\u003e\n\u003cli\u003eValves Open: Aggressive, race-inspired note with a sharp, exotic edge. Expect crisp upshifts, raw overrun crackles, and an aggressive top-end snarl as you approach redline.\u003c\/li\u003e\n\u003cli\u003eTurbo-backed character with a deeper, more resonant tone than the factory system, without drifting into raspy or tinny territory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials \u0026amp; Engineering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConstructed from premium T304 stainless steel for superior corrosion resistance and longevity\u003c\/li\u003e\n\u003cli\u003ePrecision TIG-welded for structural integrity and clean aesthetics\u003c\/li\u003e\n\u003cli\u003eMandrel-bent tubing ensures optimal exhaust flow and reduced backpressure\u003c\/li\u003e\n\u003cli\u003eIntegrated valve system retains OEM functionality for seamless drive mode transitions\u003c\/li\u003e\n\u003cli\u003eDesigned to reduce weight vs. factory system while improving throttle response\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncreased exhaust flow for improved horsepower and throttle response\u003c\/li\u003e\n\u003cli\u003eReduced backpressure for a more efficient powerband\u003c\/li\u003e\n\u003cli\u003eNoticeable weight savings over OEM exhaust components\u003c\/li\u003e\n\u003cli\u003eEnhanced driving engagement through sound and responsiveness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFull stainless steel catback exhaust system\u003c\/li\u003e\n\u003cli\u003eIntegrated valved muffler assembly\u003c\/li\u003e\n\u003cli\u003eAll required clamps, hardware, and gaskets\u003c\/li\u003e\n\u003cli\u003eInstallation guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eWhy This System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe F80 M3 and F82 M4 already deliver serious performance—but from the factory, they're still held back by a restrictive, overly quiet exhaust. This system removes those limitations and unlocks the raw, emotional experience the S55 was built for.\u003c\/p\u003e\n\u003cp\u003eIf you're the kind of owner who values precision engineering, track-ready performance, and a sound that turns every drive into an event—this is the upgrade that completes the car.\u003c\/p\u003e","brand":"Velocity Performance Parts","offers":[{"title":"Default Title","offer_id":48505616597241,"sku":"14:200004889#F80 M3 F82 M4","price":1799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0785\/7497\/7273\/files\/S19f88fca43504776900378e40e7548cdp.webp?v=1784259838","url":"https:\/\/www.velocityperformanceparts.com\/products\/bmw-f80-m3-f82-m4-valved-catback-exhaust-system","provider":"Velocity Performance Parts","version":"1.0","type":"link"}