{"product_id":"valvetronic-designs-valved-exhaust-system-bmw-g80-m3-g82-g83-m4","title":"Valvetronic Designs Valved Exhaust System – BMW G80 M3 \/ G82 G83 M4","description":"\u003cp\u003e\u003cstrong\u003eEqual-Length Performance with Refined S58 Sound\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTransform the sound and performance of your BMW G8X platform with the Valvetronic Designs Exhaust System for the G80 M3 and G82\/G83 M4. Designed around a single 3.5” equal-length mid-pipe architecture, this system unlocks the true character of the S58 engine while maintaining refined drivability and OEM compatibility.\u003c\/p\u003e\n\u003cp\u003eEngineered for enthusiasts who want sharper tone, improved exhaust flow, and premium valve control, the system pairs perfectly with the factory rear section or can be upgraded with the optional Valvetronic Designs Valved Axle-Back Exhaust for full sound customisation.\u003c\/p\u003e\n\u003cp\u003eAvailable in T304 stainless steel or ultra-lightweight Grade 5 titanium.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for BMW G80 M3, G82 M4 Coupe \u0026amp; G83 M4 Convertible\u003c\/li\u003e\n\u003cli\u003eSingle 3.5” equal-length mid-pipe design\u003c\/li\u003e\n\u003cli\u003eOptional valved axle-back exhaust system available\u003c\/li\u003e\n\u003cli\u003eEqual-length architecture improves exhaust pulse balance\u003c\/li\u003e\n\u003cli\u003eHigher-pitch, refined S58 exhaust tone\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or aftermarket downpipes\u003c\/li\u003e\n\u003cli\u003eNo CEL design with OEM compatibility\u003c\/li\u003e\n\u003cli\u003eElectronic valve control with included controller\u003c\/li\u003e\n\u003cli\u003eOEM valve integration available\u003c\/li\u003e\n\u003cli\u003ePrecision TIG-welded and mandrel-bent tubing\u003c\/li\u003e\n\u003cli\u003eAvailable in T304 stainless steel or Grade 5 titanium\u003c\/li\u003e\n\u003cli\u003ePremium exhaust tips included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSound Characteristics\u003c\/h3\u003e\n\u003cp\u003eEngineered to improve the factory S58 exhaust tone without excessive rasp or drone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWith OEM Rear Section:\u003c\/strong\u003e\u003cbr\u003eSharper, more engaging tone with improved clarity and depth\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWith Optional Valved Axle-Back:\u003c\/strong\u003e\u003cbr\u003eAggressive motorsport-inspired sound when open\u003cbr\u003eRefined, quiet operation when closed\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEqual-Length Benefits:\u003c\/strong\u003e\u003cbr\u003eBalances exhaust pulses for smoother and more exotic sound characteristics\u003c\/p\u003e\n\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eImproved exhaust flow and scavenging\u003c\/li\u003e\n\u003cli\u003eEnhanced throttle response and turbo efficiency\u003c\/li\u003e\n\u003cli\u003eReduced exhaust restriction throughout the RPM range\u003c\/li\u003e\n\u003cli\u003eCompatible with stock or upgraded downpipes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWeight Savings\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTitanium System:\u003c\/strong\u003e\u003cbr\u003eUp to 57.8 lbs lighter than OEM\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStainless Steel System:\u003c\/strong\u003e\u003cbr\u003eUp to 24.7 lbs lighter than OEM\u003c\/p\u003e\n\u003ch3\u003eConstruction Options\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eT304 Stainless Steel\n\u003cul\u003e\u003cli\u003eDurable, corrosion-resistant, refined tone\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eGrade 5 Titanium\n\u003cul\u003e\u003cli\u003eLightweight with sharper, exotic exhaust characteristics\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eValve Integration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eElectronic valve controller included\u003c\/li\u003e\n\u003cli\u003eRapid valve open\/close operation\u003c\/li\u003e\n\u003cli\u003eOEM integration available for factory-style functionality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMid-pipe and axle-back can be installed independently\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation\u003c\/li\u003e\n\u003cli\u003eFully reversible to stock\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eProfessional installation recommended\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eInstallation available at Sequential Racing – Altona North, Melbourne. See \u003ca href=\"\/en-us\/pages\/exhaust-installation-melbourne\"\u003eexhaust installation\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCompatibility Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eV1 \/ V2 components are not compatible with V3 systems\u003c\/li\u003e\n\u003cli\u003eV3 mid-pipe includes additional clearances near downpipe connections and mid-section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSmall visible gaps prior to tightening are normal and by design\u003c\/p\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW G80 M3 – 2020+\u003c\/li\u003e\n\u003cli\u003eBMW G82 M4 Coupe – 2020+\u003c\/li\u003e\n\u003cli\u003eBMW G83 M4 Convertible – 2020+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEngine: S58 Twin Turbo Inline-6\u003c\/p\u003e\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle 3.5” Equal-Length Mid-Pipe Assembly\u003c\/li\u003e\n\u003cli\u003eCross Brace\u003c\/li\u003e\n\u003cli\u003eOptional Valved Axle-Back Exhaust\u003c\/li\u003e\n\u003cli\u003eElectronic Valve Controller\u003c\/li\u003e\n\u003cli\u003eExhaust Tips\u003c\/li\u003e\n\u003cli\u003eAll Required Hardware \u0026amp; Clamps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMid-Pipe Diameter: 3.5”\u003c\/li\u003e\n\u003cli\u003eAxle-Back Diameter: 2.75”\u003c\/li\u003e\n\u003cli\u003eMaterials: T304 Stainless Steel or Grade 5 Titanium\u003c\/li\u003e\n\u003cli\u003eValves: Electronic with Remote Controller\u003c\/li\u003e\n\u003cli\u003eFinish: Brushed Stainless \/ Raw Titanium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose Sequential Racing?\u003c\/h3\u003e\n\u003cp\u003eSequential Racing supplies premium performance exhaust systems for BMW M and GR platforms, focusing on proven products that deliver exceptional sound, fitment, and performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrue equal-length S58 exhaust design\u003c\/li\u003e\n\u003cli\u003ePremium valved exhaust technology\u003c\/li\u003e\n\u003cli\u003eAvailable in stainless or titanium construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your BMW G80 M3 or G82\/G83 M4 with the Valvetronic Designs Exhaust System and experience the S58 platform with sharper tone, improved flow, and complete sound control.\u003c\/p\u003e\n\u003c!-- SEQR-AI-BLOCK START --\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eMid-pipe only, or mid-pipe plus valved axle-back?\u003c\/h4\u003e\n\u003cp\u003eThe mid-pipe keeps your factory rear section and sharpens the S58 tone. Adding the valved axle-back gives you full quiet\/loud control. If you only want the mid-pipe, see the \u003ca href=\"\/en-us\/products\/valvetronic-designs-hfd-midpipe-bmw-g80-g82-g83-m3-m4-s58\"\u003eValvetronic HFD midpipe\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch4\u003eStainless steel or titanium?\u003c\/h4\u003e\n\u003cp\u003eTitanium saves up to 57.8 lbs over stock and has a sharper, more exotic note. Stainless saves up to 24.7 lbs and costs less.\u003c\/p\u003e\n\u003ch4\u003eWill it throw a check engine light?\u003c\/h4\u003e\n\u003cp\u003eNo. It is a no-CEL design that works with OEM or aftermarket downpipes.\u003c\/p\u003e\n\u003ch4\u003eDo you ship and install in Australia?\u003c\/h4\u003e\n\u003cp\u003eYes. We ship Australia-wide and install at our Melbourne workshop. Before fitting any exhaust to a registered road car, check the noise rules in your state.\u003c\/p\u003e\n\u003cp\u003eSee every \u003ca href=\"\/en-us\/collections\/valvetronic-designs-exhausts\"\u003eValvetronic Designs exhaust\u003c\/a\u003e we stock, or all \u003ca href=\"\/en-us\/collections\/bmw-m-parts-carbon-upgrades\"\u003eBMW M parts\u003c\/a\u003e.\u003c\/p\u003e\n\u003c!-- SEQR-AI-BLOCK END --\u003e","brand":"Valvetronic Designs","offers":[{"title":"Full System Equal Length (Catback) \/ Brushed T304 Stainless Steel \/ (4) Brushed Steel (3.5\" Outlet)","offer_id":53417058599226,"sku":"BMW.G8X.M3.VSES.BR.BRSH","price":5116.0,"currency_code":"USD","in_stock":true},{"title":"Full System Equal Length (Catback) \/ Brushed T304 Stainless Steel \/ (4) Burnt (3.5\" Outlet)","offer_id":53417058631994,"sku":"BMW.G8X.M3.VSES.BR.BRT","price":5297.0,"currency_code":"USD","in_stock":true},{"title":"Full System Equal Length (Catback) \/ Brushed T304 Stainless Steel \/ (4) Black (3.5\" 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Midpipe \/ Brushed T304 Stainless Steel \/ No Exhaust Tips (Midpipe)","offer_id":53417059516730,"sku":"BMW.G8X.M3.MP.BR","price":2613.0,"currency_code":"USD","in_stock":true},{"title":"Equal Length Midpipe \/ Grade 5 Titanium \/ No Exhaust Tips (Midpipe)","offer_id":53417059549498,"sku":"BMW.G8X.M3.MP.TI","price":4390.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Brushed T304 Stainless Steel \/ (4) Brushed Steel (3.5\" Outlet)","offer_id":53417059582266,"sku":"BMW.G8X.M3.AXL.BR.BRSH","price":3592.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Brushed T304 Stainless Steel \/ (4) Burnt (3.5\" Outlet)","offer_id":53417059615034,"sku":"BMW.G8X.M3.AXL.BR.BRT","price":3592.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Brushed T304 Stainless Steel \/ (4) Black (3.5\" Outlet)","offer_id":53417059647802,"sku":"BMW.G8X.M3.AXL.BR.BLK","price":3810.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Brushed T304 Stainless Steel \/ (4) Forged Carbon Fiber (3.5\" Outlet)","offer_id":53417059680570,"sku":"BMW.G8X.M3.AXL.BR.FC","price":3955.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Brushed T304 Stainless Steel \/ (4) 1x1 Carbon Fiber (4.0\" Outlet)","offer_id":53417059713338,"sku":"BMW.G8X.M3.AXL.BR.RC","price":3592.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Grade 5 Titanium \/ (4) Brushed Steel (3.5\" Outlet)","offer_id":53417059811642,"sku":"BMW.G8X.M3.AXL.TI.BRSH","price":4426.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Grade 5 Titanium \/ (4) Burnt (3.5\" Outlet)","offer_id":53417059844410,"sku":"BMW.G8X.M3.AXL.TI.BRT","price":4426.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Grade 5 Titanium \/ (4) Black (3.5\" Outlet)","offer_id":53417059877178,"sku":"BMW.G8X.M3.AXL.TI.BLK","price":4426.0,"currency_code":"USD","in_stock":true},{"title":"Axleback \/ Grade 5 Titanium \/ (4) Forged Carbon Fiber (3.5\" 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