{"product_id":"audi-b9-9-5-rs4-rs5-catless-downpipe-with-heatshield","title":"Audi B9\/9.5, RS4\/RS5 Catless Downpipe With Heatshield","description":"\u003ch2\u003eAudi B9\/B9.5 RS4\/RS5 Catless Downpipe With Heatshield\u003c\/h2\u003e\n\u003cp\u003eUnlock the full performance potential of your Audi RS4 or RS5 with these Catless Downpipes with Heatshield — engineered to maximise exhaust flow, improve turbocharger efficiency, and keep under-bonnet temperatures in check.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for the 2.9L twin-turbocharged V6, these downpipes replace the restrictive factory catalytic converters, significantly reducing exhaust backpressure and allowing both turbochargers to spool faster. The result is sharper throttle response, increased power potential, and a noticeably more aggressive exhaust note.\u003c\/p\u003e\n\u003cp\u003eFull woven heat shielding wraps both pipes, reflecting radiant heat away from surrounding components and helping to reduce heat soak in the engine bay — worth having on a hot-vee twin-turbo V6 working hard.\u003c\/p\u003e\n\u003cp\u003eManufactured from mandrel-bent 304 stainless steel with precision TIG welding throughout, and supplied as a matched left and right pair with the factory sensor bungs retained.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eHigh-Flow Catless Design\u003c\/h3\u003e\n\u003cp\u003eRemoves the restrictive factory catalytic converters for maximum exhaust flow and performance potential.\u003c\/p\u003e\n\u003ch3\u003eFull Heat Shielding\u003c\/h3\u003e\n\u003cp\u003eWoven shielding covers both pipes, reflecting radiant heat away from surrounding components and helping to limit heat soak.\u003c\/p\u003e\n\u003ch3\u003e304 Stainless Steel Construction\u003c\/h3\u003e\n\u003cp\u003eCorrosion-resistant stainless steel delivers exceptional durability and heat resistance under sustained load.\u003c\/p\u003e\n\u003ch3\u003eImproved Turbo Efficiency\u003c\/h3\u003e\n\u003cp\u003eReduced backpressure allows both turbochargers to spool faster and operate more efficiently.\u003c\/p\u003e\n\u003ch3\u003eRetained Sensor Bungs\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensor positions are retained so the original sensors transfer directly across.\u003c\/p\u003e\n\u003ch3\u003eDirect Bolt-On Fitment\u003c\/h3\u003e\n\u003cp\u003eDesigned for the 2.9T V6 platform using factory mounting locations, supplied as a matched left and right pair.\u003c\/p\u003e\n\u003ch2\u003ePerformance Benefits (When Tuned)\u003c\/h2\u003e\n\u003cp\u003e• Increased horsepower and torque potential\u003cbr\u003e• Faster turbo spool and improved throttle response\u003cbr\u003e• Reduced exhaust backpressure\u003cbr\u003e• Improved thermal management in the engine bay\u003cbr\u003e• More aggressive exhaust note\u003cbr\u003e• Ideal foundation for Stage 2 and higher-performance builds\u003c\/p\u003e\n\u003cp\u003ePerformance gains may vary depending on ECU calibration, fuel quality, and supporting modifications.\u003c\/p\u003e\n\u003ch2\u003eSound Characteristics\u003c\/h2\u003e\n\u003cp\u003eCompared to the factory downpipes, a catless setup typically delivers:\u003c\/p\u003e\n\u003cp\u003e• Deeper and more aggressive V6 tone\u003cbr\u003e• Increased turbo spool acoustics\u003cbr\u003e• Louder cold starts\u003cbr\u003e• Enhanced pops and burbles (when tuned)\u003cbr\u003e• Greater overall exhaust volume\u003c\/p\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003eAudi B9 RS4 Avant (2018–2019)\u003cbr\u003eAudi B9.5 RS4 Avant (2020+)\u003c\/p\u003e\n\u003cp\u003eAudi B9 RS5 Coupe \/ Sportback (2018–2019)\u003cbr\u003eAudi B9.5 RS5 Coupe \/ Sportback (2020+)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2.9L Twin-Turbocharged V6\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhich OPF Option Do I Need?\u003c\/h2\u003e\n\u003cp\u003eOn this platform the particulate filter (OPF\/GPF) sits in the downpipe itself, so the two specifications are different parts. European-delivered facelift cars are filter-equipped; Australian and North American cars are not.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNON OPF - AU\/US SPEC\u003c\/strong\u003e — for vehicles delivered new in Australia, New Zealand, the United States or Canada.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOPF EQUIPPED - EU SPEC\u003c\/strong\u003e — for vehicles delivered new in the European Union or the United Kingdom.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUNSURE - CONTACT US\u003c\/strong\u003e — select this and our team will confirm the correct specification against your VIN before dispatch.\u003c\/p\u003e\n\u003ch2\u003ePlease Note\u003c\/h2\u003e\n\u003cp\u003eThis is a catless motorsport product intended for off-road and motorsport use only.\u003c\/p\u003e\n\u003cp\u003eProfessional installation is strongly recommended.\u003c\/p\u003e\n\u003cp\u003eECU tuning may be required to fully utilise the performance benefits and prevent check engine lights associated with catalyst removal.\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 RS4 \/ RS5 (2018–2019) \/ NON OPF - AU\/US SPEC","offer_id":52700428992794,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 RS4 \/ RS5 (2018–2019) \/ OPF EQUIPPED - EU SPEC","offer_id":52700429025562,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9 RS4 \/ RS5 (2018–2019) \/ UNSURE - CONTACT US","offer_id":52700429058330,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9.5 RS4 \/ RS5 (2020+) \/ NON OPF - AU\/US SPEC","offer_id":52700429091098,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9.5 RS4 \/ RS5 (2020+) \/ OPF EQUIPPED - EU SPEC","offer_id":52700429123866,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true},{"title":"Audi B9.5 RS4 \/ RS5 (2020+) \/ UNSURE - CONTACT US","offer_id":52700429156634,"sku":null,"price":995.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/1177\/4490\/files\/01_v2_4ddfe309-ab86-4f67-afad-b0dd9bfcfefb.png?v=1786782965","url":"https:\/\/provenperformanceparts.com.au\/products\/audi-b9-9-5-rs4-rs5-catless-downpipe-with-heatshield","provider":"Proven Performance Parts","version":"1.0","type":"link"}