{"product_id":"b9-sq5-catback-exhaust","title":"APR Audi B9 SQ5 18-25 Rear Catback Exhaust System","description":"\u003cp\u003eIntroducing the APR Rear Catback Exhaust System for the Audi B9 SQ5\u003c\/p\u003e\n\u003cp\u003eThe APR Rear Catback Exhaust System for your Audi B9 SQ5 introduces a deeper and more aggressive growl to your vehicle’s exhaust note. The system is a direct bolt on with your factory exhaust system or can be combined with the APR Midpipe Exhaust System for a more refined and more powerful full catback experience! Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance and elevate sound. Crafted from premium materials and built with advanced manufacturing techniques, this system is will withstand harsh conditions and deliver lasting performance. Expect a bold, aggressive growl at wide-open throttle, along with a gain of 5 AWHP and 6 AWFT-LBS or an impressive gain of 10 AWHP and 12 AWFT-LBS when combined with the APR Midpipe Exhaust System!\u003c\/p\u003e\n\u003cp\u003eUnmatched Design and Precision Engineering\u003c\/p\u003e\n\u003cp\u003eUnlike anything currently available, the APR system starts just after the midpipes but can be combined with our midpipe system to making this a true full-system upgrade. We’ve minimized restrictions with smooth transitions, oversized piping, and a straight-through rear muffler \/ Helmholtz resonators. Constructed from mandrel-bent T304 stainless steel with a brushed finish and TIG welding throughout, this exhaust system is as durable as it is striking. Installation is hassle-free, thanks to precision-fit brackets, OEM-style slip clamps, and an included upgraded tunnel brace to accommodate the oversized piping.\u003c\/p\u003e\n\u003cp\u003eInspired by RS Performance\u003c\/p\u003e\n\u003cp\u003eLike the RS4 and RS5, this system features a reengineered exhaust routing design. It utilizes a dual 2.75” (70mm) midpipes merging through a cast Y-junction into a massive 3.5” (91mm) midpipe, replacing the restrictive factory dual-pipe setup. The exhaust valve is fully integrated with the OEM control system, adjusting automatically to enhance sound during aggressive driving while maintaining a quieter profile during cruising. When closed, exhaust gasses route through the rear muffler featuring straight-through sound absorption technology and when open, bypasses the rear muffler all together.\u003c\/p\u003e\n\u003cp\u003eExperience the APR Difference\u003c\/p\u003e\n\u003cp\u003eDesigned for enthusiasts seeking the perfect balance of power, sound, and quality, the APR Midback Exhaust System for the Audi SQ5 is a testament to engineering excellence. With its performance-driven design and durable construction, this system not only transforms your driving experience but also ensures years of reliable performance.\u003c\/p\u003e\n\u003cp\u003ePlease note: Fitment excludes vehicles equipped with S Sport Package \/ Air Suspension\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003ePlug-and-Play with APR Midpipe System or factory system.\u003c\/li\u003e\n\u003cli\u003ePerformance gains of 5 AWHP and 6 AWFT-LBS of torque on their own or 10 AWHP and 12 AWFT-LBS of torque when combined with the APR Midpipe System.\u003c\/li\u003e\n\u003cli\u003ePremium T304 stainless steel construction with TIG welding for strength and durability.\u003c\/li\u003e\n\u003cli\u003eOptimized flow through dual 2.75” midpipes to single 3.5” midpipe exiting through dual 3” downturns.\u003c\/li\u003e\n\u003cli\u003eMandrel-bent brushed piping paired with electropolished cast splitters for a refined finish.\u003c\/li\u003e\n\u003cli\u003ePrecision brackets and slip clamps ensure accurate alignment and hassle-free installation.\u003c\/li\u003e\n\u003cli\u003eIntegrated muffler minimizes drone and enhances sound quality.\u003c\/li\u003e\n\u003cli\u003eValve-controlled rear muffler dynamically adjust sound based on driving style.\u003c\/li\u003e\n\u003cli\u003eSmooth transitions and straight-through components maximize performance by reducing restrictions.\u003c\/li\u003e\n\u003cli\u003eStrikes the perfect balance of power, sound, style, and quality for enthusiasts.\u003c\/li\u003e\n\u003cli\u003eFully emissions compliant for worry-free operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":53239702847787,"sku":"CBK0057","price":1449.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/3645\/4465\/files\/1_16222e02-7b48-4b61-8903-e4da9acd9948.png?v=1778228113","url":"https:\/\/www.burton-racing.com\/products\/b9-sq5-catback-exhaust","provider":"Burton-Racing","version":"1.0","type":"link"}