{"product_id":"bmw-m3-m4-valved-exhaust","title":"BMW F8x M3 \/ M4 Equal Length Valved Sport Exhaust System","description":"\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/iHfweazxIII?si=HU6ckWC6ksmP06wH\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCure the rasp and unlock the rich, balanced sound of your BMW F8X M3 or M4's S55 with the Valvetronic Designs equal-length valved cat-back, an equal-length 2.75\" mid-section with H-pipe and a 3.5\" axle-back in T304 stainless steel or Grade 5 titanium.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe S55 in the F8X M3 and M4 is a performance masterpiece, but its stock exhaust note has long been criticised for excessive rasp and a lack of tonal depth. This equal-length valved cat-back eliminates the factory harshness and unlocks the rich, balanced sound the S55 was always capable of producing.\u003c\/p\u003e\n\u003cp\u003eThe system features a 2.75-inch equal-length mid-section with an H-pipe feeding into a 3.5-inch axle-back. The equal-length design smooths the exhaust tone across the rev range while preserving the aggressive character owners love. With the valves open, gases exit freely from the passenger-side tips for maximum volume and performance. With the valves closed, flow is routed through the quad-chamber muffler to the driver-side tips for a quieter, more refined note, ideal for daily driving. No cutting or welding is required; this is a true direct bolt-on system designed to mount to factory points.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/AwbRTFOi1mo?si=Xybizcl1n-YVVdUE\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy it works\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEqual-length mid-section: balances pulses for a cleaner, smoother tone without losing aggression\u003c\/li\u003e\n\u003cli\u003eH-pipe design: improves scavenging for a fuller, more refined sound\u003c\/li\u003e\n\u003cli\u003eDual-mode operation: raw and loud (open) or subdued and civilised (closed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSound and control\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eValves open: aggressive, free-breathing tone with reduced rasp and improved high-rpm clarity\u003c\/li\u003e\n\u003cli\u003eValves closed: stock-like sound levels for stealthy driving\u003c\/li\u003e\n\u003cli\u003eElectronic valve control: includes a standalone controller; OEM integration available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/LNseyKBqB4c?si=8bZAVMqdlLF_4Szr\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eConstruction and options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaterials: T304 stainless steel or Grade 5 titanium\u003c\/li\u003e\n\u003cli\u003eWeight savings: –21.7 lb (stainless) \/ –49.2 lb (titanium) vs OEM\u003c\/li\u003e\n\u003cli\u003eCraftsmanship: precision TIG welds and fully mandrel-bent tubing for maximum flow\u003c\/li\u003e\n\u003cli\u003eTips: multiple premium finish options to complement your M3 or M4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2015–2018 BMW M3 (F80)\u003c\/li\u003e\n\u003cli\u003e2015–2020 BMW M4 Coupe (F82)\u003c\/li\u003e\n\u003cli\u003e2015–2020 BMW M4 Convertible (F83)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/M30lYzI0Tq0?si=_imNM4v17q0a5Qvi\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-on; no cutting or welding required\u003c\/li\u003e\n\u003cli\u003e100% reversible, return to stock at any time\u003c\/li\u003e\n\u003cli\u003eNote for S55 owners: on free-flow\/race downpipes, \"2k rpm rasp\" may be present during low-rpm shifts. For the most refined tone, we recommend high-flow (200 cell) catalytic converters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2.75\" equal-length H-pipe mid-section\u003c\/li\u003e\n\u003cli\u003e3.5\" axle-back with quad-chamber muffler\u003c\/li\u003e\n\u003cli\u003eElectronic valve system with controller (OEM integration optional)\u003c\/li\u003e\n\u003cli\u003eAll necessary clamps and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/VaFdvNKLGPQ?si=ERfWObTWAAbISIWX\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMid-section diameter: 2.75\" equal-length with H-pipe\u003c\/li\u003e\n\u003cli\u003eAxle-back diameter: 3.5\"\u003c\/li\u003e\n\u003cli\u003eMaterial: T304 stainless steel or Grade 5 titanium\u003c\/li\u003e\n\u003cli\u003eValves: electronic, rapid open\/close\u003c\/li\u003e\n\u003cli\u003eWeight savings: –21.7 lb (stainless) \/ –49.2 lb (titanium) vs OEM\u003c\/li\u003e\n\u003cli\u003eDesign: quad-chamber muffler for refined closed-valve tone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy buy from Vero Motorsport\u003c\/h3\u003e\n\u003cp\u003eVero Motorsport is an authorised Valvetronic Designs dealer, with fast Australia-wide shipping and expert support before and after your purchase.\u003c\/p\u003e\n\u003cp\u003eOrder online today and add the F8X M3 \/ M4 valved cat-back to your cart.\u003c\/p\u003e","brand":"Valvetronic Designs","offers":[{"title":"Stainless Steel \/ (4) Brushed Steel (3.5\" Outlet) \/ Full Exhaust","offer_id":44413231530077,"sku":"BMW.F8X.M3.M4.VSES.BR.BRSH","price":5939.99,"currency_code":"AUD","in_stock":true},{"title":"Stainless Steel \/ (4) Brushed Steel (3.5\" Outlet) \/ '+ 400 Cell Catted 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