{"product_id":"bmw-f90-m5-stainless-steel-valved-catback-exhaust","title":"BMW F90 M5 Stainless Steel Valved Catback Exhaust","description":"\u003ch2\u003eBMW F90 M5 Stainless Steel Valved Catback Exhaust\u003c\/h2\u003e\n\u003cp\u003eGive your BMW F90 M5 the exhaust note its 4.4 litre twin turbo V8 has always deserved with this Stainless Steel Valved Catback Exhaust System, engineered to free up exhaust flow and transform the character of the car without compromising everyday drivability.\u003c\/p\u003e\n\u003cp\u003eThe factory F90 exhaust is heavily silenced, and the S63 spends most of its life sounding far quieter than an M5 should. This system replaces the restrictive rear section with a free flowing design that lets the engine breathe, unlocking the deep V8 tone the standard car keeps hidden.\u003c\/p\u003e\n\u003cp\u003eAn independent Varex valve system, controlled by remote, puts you in charge of how loud the car is at any moment. Closed, it is calm enough for a cold start in a quiet street. Open, it delivers the full hard edged V8 bark under load.\u003c\/p\u003e\n\u003cp\u003eEvery section is manufactured from premium T304 stainless steel and precision TIG welded throughout, built to handle the heat of a twin turbo V8 while retaining factory mounting points for a clean, bolt on installation.\u003c\/p\u003e\n\u003cp\u003eWhether your M5 is otherwise standard or running downpipes and a tune, this system delivers the sound and flow the platform is capable of while remaining completely usable every day.\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 T304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eCorrosion resistant stainless steel throughout for long term durability under sustained high exhaust gas temperatures.\u003c\/p\u003e\n\u003ch3\u003eImproved Exhaust Flow\u003c\/h3\u003e\n\u003cp\u003eRemoves the restriction of the heavily silenced factory rear section and allows the S63 to breathe far more freely.\u003c\/p\u003e\n\u003ch3\u003eSignature Twin Turbo V8 Tone\u003c\/h3\u003e\n\u003cp\u003eDelivers the deep, hard edged V8 character that the standard exhaust suppresses, with a noticeably stronger presence under load.\u003c\/p\u003e\n\u003ch3\u003ePrecision TIG Welded\u003c\/h3\u003e\n\u003cp\u003eHigh quality welds engineered to withstand extreme temperatures and demanding performance use.\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\u003eDesigned specifically for the F90 M5 using the factory mounting locations and hanger positions.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cp\u003e• Increased exhaust flow efficiency\u003cbr\u003e• Sharper throttle response\u003cbr\u003e• Deeper and more aggressive 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• Refined OEM+ exhaust note\u003cbr\u003e• Minimal drone for comfortable daily driving\u003cbr\u003e• Discreet enough for early starts and residential streets\u003c\/p\u003e\n\u003ch3\u003eValves Open\u003c\/h3\u003e\n\u003cp\u003e• Deep, aggressive twin turbo V8 tone\u003cbr\u003e• Substantially greater volume under acceleration\u003cbr\u003e• Enhanced crackles and pops when tuned\u003cbr\u003e• More pronounced cold starts\u003cbr\u003e• Strong V8 character throughout the rev range\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eBMW F90 M5 (2018-2023)\u003cbr\u003eBMW F90 M5 Competition (2018-2023)\u003c\/p\u003e\n\u003cp\u003e4.4L S63 Twin Turbocharged V8 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 F90 M5 \/ M5 Competition (2018–2020) Pre-LCI \/ Black Tip","offer_id":52711413383450,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F90 M5 \/ M5 Competition (2018–2020) Pre-LCI \/ Chrome Tip","offer_id":52711413416218,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F90 M5 \/ M5 Competition (2018–2020) Pre-LCI \/ Carbon Fibre Style Tip","offer_id":52711413448986,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F90 M5 \/ M5 Competition (2021–2023) LCI \/ Black Tip","offer_id":52711556514074,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F90 M5 \/ M5 Competition (2021–2023) LCI \/ Chrome Tip","offer_id":52711556546842,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true},{"title":"BMW F90 M5 \/ M5 Competition (2021–2023) LCI \/ Carbon Fibre Style Tip","offer_id":52711556579610,"sku":null,"price":2400.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/02_99dc3b26-36d5-41d1-9ed8-2934b447b306.png?v=1787038051","url":"https:\/\/provenperformanceparts.com.au\/products\/bmw-f90-m5-stainless-steel-valved-catback-exhaust","provider":"Proven Performance Parts","version":"1.0","type":"link"}