{"product_id":"bmw-g90-g99-m5-stainless-steel-valved-catback-exhaust","title":"BMW G90\/G99 M5 Stainless Steel Valved Catback Exhaust","description":"\u003ch2\u003eBMW G90\/G99 M5 Stainless Steel Valved Catback Exhaust\u003c\/h2\u003e\n\u003cp\u003eRestore the voice of your BMW G90 M5 or G99 M5 Touring with this Stainless Steel Valved Catback Exhaust System, engineered specifically for the S68 twin turbo V8 hybrid powertrain.\u003c\/p\u003e\n\u003cp\u003eThe G90 generation is the quietest M5 BMW has ever built. Tightened noise regulations and the hybrid drivetrain leave an enormously capable V8 sounding muted from the driver's seat. This system replaces the restrictive factory rear section and gives the car the presence its performance deserves.\u003c\/p\u003e\n\u003cp\u003eAn independent Varex valve system, controlled by remote, means the choice is always yours. Closed, the car remains as discreet as standard. Open, the S68 finally sounds like a V8 M car.\u003c\/p\u003e\n\u003cp\u003eManufactured from premium SS304 stainless steel with a heavier wall thickness than most systems in this class, and precision TIG welded throughout, it retains every factory mounting point for a straightforward bolt on installation.\u003c\/p\u003e\n\u003cp\u003eFor the current M5, this is the single most transformative modification available, and it changes nothing about how the car drives.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eIndependent Varex Valve System\u003c\/h3\u003e\n\u003cp\u003eRather than reusing the restricted factory valves, this system operates its own dedicated valve assembly with complete travel in both directions. Sealed when closed for quiet running, and fully unobstructed when open for maximum flow and volume. Switch between a refined daily-driving experience and an aggressive performance exhaust note at the touch of a button.\u003c\/p\u003e\n\u003ch3\u003ePremium SS304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eCorrosion resistant stainless steel with a substantial wall thickness, built for durability under sustained high exhaust gas temperatures.\u003c\/p\u003e\n\u003ch3\u003eEngineered for the S68 Hybrid V8\u003c\/h3\u003e\n\u003cp\u003eDesigned around the current generation M5 powertrain and its exhaust routing rather than adapted from an earlier platform.\u003c\/p\u003e\n\u003ch3\u003eTransforms an Exceptionally Quiet Car\u003c\/h3\u003e\n\u003cp\u003eAddresses the single most common criticism of the G90 M5 by unlocking the V8 tone the factory system suppresses.\u003c\/p\u003e\n\u003ch3\u003ePrecision TIG Welded\u003c\/h3\u003e\n\u003cp\u003eFish scale TIG welding throughout, pressure tested for integrity before dispatch.\u003c\/p\u003e\n\u003ch3\u003eMandrel Bent Tubing\u003c\/h3\u003e\n\u003cp\u003eMaintains a consistent internal diameter through every bend so flow is never choked.\u003c\/p\u003e\n\u003ch3\u003eDirect Bolt On Fitment\u003c\/h3\u003e\n\u003cp\u003eUses the factory mounting locations and hanger positions, with no cutting or welding required.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cp\u003e• Increased exhaust flow efficiency\u003cbr\u003e• Sharper throttle response\u003cbr\u003e• Deep, authoritative V8 exhaust tone\u003cbr\u003e• Reduced exhaust restriction\u003cbr\u003e• Ideal supporting modification for downpipes and ECU tuning\u003cbr\u003e• Full daily drivability retained through valve control\u003c\/p\u003e\n\u003cp\u003ePerformance gains may vary depending on ECU calibration and supporting modifications.\u003c\/p\u003e\n\u003ch2\u003eSound Characteristics\u003c\/h2\u003e\n\u003ch3\u003eValves Closed\u003c\/h3\u003e\n\u003cp\u003e• Close to factory refinement\u003cbr\u003e• Minimal drone for comfortable daily driving\u003cbr\u003e• Discreet during electric and low load running\u003c\/p\u003e\n\u003ch3\u003eValves Open\u003c\/h3\u003e\n\u003cp\u003e• Deep and commanding twin turbo V8 tone\u003cbr\u003e• Large increase in volume under acceleration\u003cbr\u003e• Enhanced crackles and pops when tuned\u003cbr\u003e• More pronounced cold starts\u003cbr\u003e• Strong V8 character across the rev range\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eBMW G90 M5 Sedan (2024+)\u003cbr\u003eBMW G99 M5 Touring (2024+)\u003c\/p\u003e\n\u003cp\u003e4.4L S68 Twin Turbocharged V8 Hybrid Engine\u003c\/p\u003e\n\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cp\u003eProfessional installation is strongly recommended.\u003c\/p\u003e\n\u003cp\u003eExhaust sound characteristics may vary depending on supporting modifications such as downpipes and ECU tuning.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Proven Performance Parts\u003c\/h2\u003e\n\u003cp\u003eWe specialise in high-performance parts for European vehicles — including Volkswagen GTI \u0026amp; R models, Audi S\/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.\u003c\/p\u003e","brand":"Proven Performance Parts","offers":[{"title":"BMW G90 M5 Sedan (2024+) \/ Black Tip","offer_id":52711413580058,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true},{"title":"BMW G90 M5 Sedan (2024+) \/ Chrome Tip","offer_id":52711413612826,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true},{"title":"BMW G90 M5 Sedan (2024+) \/ Carbon Fibre Style Tip","offer_id":52711413645594,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true},{"title":"BMW G99 M5 Touring (2024+) \/ Black Tip","offer_id":52711546913050,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true},{"title":"BMW G99 M5 Touring (2024+) \/ Chrome Tip","offer_id":52711546945818,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true},{"title":"BMW G99 M5 Touring (2024+) \/ Carbon Fibre Style Tip","offer_id":52711546978586,"sku":null,"price":2600.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/01_e17b06b5-b376-41dd-92ec-54f96f28194c.png?v=1787038072","url":"https:\/\/provenperformanceparts.com.au\/products\/bmw-g90-g99-m5-stainless-steel-valved-catback-exhaust","provider":"Proven Performance Parts","version":"1.0","type":"link"}