{"product_id":"audi-b9-b9-5-rs4-rs5-stainless-steel-valved-catback-exhaust","title":"Audi B9\/B9.5, RS4\/RS5 Stainless Steel Valved Catback Exhaust","description":"\u003ch2\u003eAudi B9\/B9.5 RS4\/RS5 Stainless Steel Valved Catback Exhaust\u003c\/h2\u003e\n\u003cp\u003eGive your Audi RS4 or RS5 the voice its 2.9L twin-turbo V6 deserves with this Stainless Steel Valved Catback Exhaust System, engineered to free up exhaust flow and transform the character of the car without compromising everyday usability.\u003c\/p\u003e\n\u003cp\u003eThe factory B9 exhaust is heavily silenced, and the 2.9T spends most of its life sounding far more subdued than the engine actually is. This system replaces the restrictive rear section with a free flowing design that lets the V6 breathe, unlocking the harder, deeper tone the standard car keeps hidden.\u003c\/p\u003e\n\u003cp\u003eAn independent Varex valve system, controlled by remote, puts you in complete control 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 character of the engine under load.\u003c\/p\u003e\n\u003cp\u003eEvery section is manufactured from stainless steel with a mirror polished finish and precision TIG welding throughout, built to handle sustained heat while retaining the factory mounting points and tip positions for a clean, bolt on installation.\u003c\/p\u003e\n\u003cp\u003eWhether your car is otherwise standard or running downpipes and a tune, this system delivers the sound 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\u003eStainless 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\u003eMirror Polished Finish\u003c\/h3\u003e\n\u003cp\u003eA clean, high quality finish across every visible section of the system.\u003c\/p\u003e\n\u003ch3\u003eImproved Exhaust Flow\u003c\/h3\u003e\n\u003cp\u003eRemoves the restriction of the heavily silenced factory rear section and lets the 2.9T V6 breathe far more freely.\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 for the B9 platform 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 twin-turbo V6 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 V6 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 character throughout the rev range\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eAudi B9 \/ B9.5 RS4 Avant (2017-2023)\u003cbr\u003eAudi B9 \/ B9.5 RS5 Coupe (2017-2023)\u003cbr\u003eAudi B9 \/ B9.5 RS5 Sportback (2017-2023)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2.9L Twin-Turbocharged V6\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhich Option Do I Need?\u003c\/h2\u003e\n\u003cp\u003eSelect the body style of your car. The RS4 Avant, RS5 Coupe and RS5 Sportback have different rear sections, so the exhaust is not interchangeable between them.\u003c\/p\u003e\n\u003cp\u003eIf you are unsure, send us your VIN and our team will confirm the correct system before dispatch.\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\n","brand":"Proven Performance Parts","offers":[{"title":"Audi B9 \/ B9.5 RS4 Avant (2017–2023) \/ Black Tip","offer_id":52730498351386,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS4 Avant (2017–2023) \/ Chrome Tip","offer_id":52730498384154,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS4 Avant (2017–2023) \/ Carbon Fibre Style Tip","offer_id":52730498416922,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Coupe (2017–2023) \/ Black Tip","offer_id":52730501071130,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Coupe (2017–2023) \/ Chrome Tip","offer_id":52730501103898,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Coupe (2017–2023) \/ Carbon Fibre Style Tip","offer_id":52730501136666,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Sportback (2017–2023) \/ Black Tip","offer_id":52730501169434,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Sportback (2017–2023) \/ Chrome Tip","offer_id":52730501202202,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 \/ B9.5 RS5 Sportback (2017–2023) \/ Carbon Fibre Style Tip","offer_id":52730501234970,"sku":null,"price":2650.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/z093.png?v=1787381156","url":"https:\/\/provenperformanceparts.com.au\/products\/audi-b9-b9-5-rs4-rs5-stainless-steel-valved-catback-exhaust","provider":"Proven Performance Parts","version":"1.0","type":"link"}