{"title":"26\/5\/2025 akrastone comp part 2","description":null,"products":[{"product_id":"akrapovic-audi-c7-rs6-avant-evolution-line-titanium","title":"Akrapovic Audi C7 RS6 Avant Evolution Line Titanium Exhaust","description":"\u003ch4 style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eAudi’s high-performance RS models are an ideal match for the expertly styled and beautifully engineered Akrapovič Evolution exhaust systems. The Evolution gives more power, higher torque, decreases the weight, and delivers an unmistakable Akrapovič sound—which has a deep sound at lower revs and a ‘popping’ sound as things speed up when the throttle is lifted. This titanium exhaust system has cast collectors and three mufflers, with the central one featuring an x-piece inside, which increase power and improve its sound. The valves of the system are designed to open and close in line with the RS’ standard electronics, and the whole system has carbon-fibre tailpipes to show off the exquisite finish of the Akrapovič exhaust. Its easy-to-fit instructions are included, and with this cat-back performance exhaust system—which means that the stock catalytic converters remain in place—there’s no need to remap the ECU (it’s simply a plug-and play system).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eYou may also consider the \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca href=\"https:\/\/www.Performance%20Parts%20Direct.co.uk\/products\/akrapovic-audi-c7-rs6-rs7-avant-link-pipe-set-akrapovic-exhaust-system\" title=\"Akrapovic Audi C7 RS6 \u0026amp; RS7 Avant Link Pipe Set (Akrapovič Exhaust System)\" style=\"color: #2b00ff; text-decoration: underline;\" target=\"_blank\"\u003eAkrapovic Audi C7 RS6 \u0026amp; RS7 Avant Link Pipe Set (Akrapovič Exhaust System)\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\n\u003cstrong\u003eFeatures\u003c\/strong\u003e \u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower +7.0 kW at 5950 rpm\u003c\/li\u003e\n\u003cli\u003eTorque +15.4 Nm at 3300 rpm\u003c\/li\u003e\n\u003cli\u003eWeight -8.1 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eAudi C7 RS6\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e   \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eS-AU\/TI\/3H \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAkrapovic \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOne Year Akrapovic Warranty\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\n\u003cstrong\u003ePhotos \u0026amp; Videos\u003c\/strong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_C7_RS6_Avant_Evolution_Line_Titanium_Exhaust_System_-_5_2048x2048.png?v=1573939597\" alt=\"Akrapovic Audi C7 RS6 Avant Evolution Line Titanium Exhaust System - Performance Parts Direct UK\" style=\"float: none;\" width=\"2048x2048\" height=\"2048x2048\" data-mce-style=\"float: none;\"\u003e\n\u003c\/h4\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_C7_RS6_Avant_Evolution_Line_Titanium_Exhaust_System_-_2_2048x2048.png?v=1573939550\" alt=\"Akrapovic Audi C7 RS6 Avant Evolution Line Titanium Exhaust System - Performance Parts Direct UK\" style=\"float: none;\" width=\"2048x2048\" height=\"2048x2048\" data-mce-style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Akrapovic","offers":[{"title":"Default Title","offer_id":65307402797405,"sku":"S-AU\/TI\/3H","price":8733.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1069\/0009\/5325\/files\/Akrapovic_Audi_C7_RS6_Avant_Evolution_Line_Titanium_Exhaust_System_-_3.png?v=1784574281"},{"product_id":"akrapovic-audi-4s-r8-slip-on-line-titanium-exhaust-system","title":"Akrapovic Audi 4S R8 Slip-On Line Titanium Exhaust System","description":"\u003ch4 style=\"text-align: left;\"\u003e\u003cstrong\u003e\u003cspan class=\"bodytype\"\u003eDescription\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Slip-On Line exhaust system is constructed from an ultra-lightweight high-grade titanium alloy, boosting the R8’s power-to-weight ratio and handling characteristics. The Slip-On Line (Titanium) has been precision engineered to improve throttle response and increase both the power and torque outputs. The performance exhaust system is designed to reduce back-pressure to almost half of the stock levels through a combination of specialized muffler shapes, secondary resonators, and titanium dual-mode exhaust valves. It is finished with two exquisitely hand-crafted carbon-fibre and titanium tailpipes that fit perfectly into the R8's stock diffusor. It is tuned to enhance the sporty note from the V10 engine while still ensuring maximum comfort and enjoyment in the car’s cockpit. The tone moves from a pleasant growl at low revs to the unique Akrapovic race-like sound as the revs rise and the excitement grows.\u003c\/p\u003e\n\u003cp\u003eThe sound can be further adjusted with the addition of the optional \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca href=\"https:\/\/www.Performance%20Parts%20Direct.co.uk\/products\/akrapovic-audi-4s-r8-sound-kit\" title=\"Akrapovic Audi 4S R8 Sound Kit\" style=\"color: #2b00ff; text-decoration: underline;\" target=\"_blank\"\u003eAkrapovic Audi 4S R8 Sound Kit\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e. Sold Separately.\u003c\/p\u003e\n\u003cp\u003eTHIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower increase by +8.5 kW at 5950 rpm\u003c\/li\u003e\n\u003cli\u003eTorque increase by +20.0 Nm at 6050 rpm\u003c\/li\u003e\n\u003cli\u003eWeight reduction of -19.5 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAudi 4S R8 5.2 FSI Coupe (2016-2018)\u003c\/li\u003e\n\u003cli\u003eAudi 4S R8 5.2 FSI Spyder (2016-2018)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eS-AUR8SO3-T\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAkrapovic\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAkrapovic One Year Warranty\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePhotos \u0026amp; Videos\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_4S_R8_Slip-On_Line_Titanium_Exhaust_System-4_2048x2048.png?v=1602242444\" alt=\"Akrapovic Audi 4S R8 Slip-On Line Titanium Exhaust System - Performance Parts Direct UK\"\u003e\u003cimg data-mce-fragment=\"1\" alt=\"Akrapovic Audi 4S R8 Slip-On Line Titanium Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_4S_R8_Slip-On_Line_Titanium_Exhaust_System-5_2048x2048.png?v=1602242451\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_4S_R8_Slip-On_Line_Titanium_Exhaust_System-5_2048x2048.png?v=1602242451\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1272\/9301\/files\/Akrapovic_Audi_4S_R8_Slip-On_Line_Titanium_Exhaust_System-6_2048x2048.png?v=1602242460\" alt=\"Akrapovic Audi 4S R8 Slip-On Line Titanium Exhaust System - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e","brand":"Akrapovic","offers":[{"title":"Default Title","offer_id":65307473576285,"sku":"S-AUR8SO3-T","price":8859.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1069\/0009\/5325\/files\/AkrapovicAudi4SR8Slip-OnLineTitaniumExhaustSystem-1.png?v=1784574309"},{"product_id":"stone-exhaust-audi-cwub-cwbc-c7-rs6-valvetronic-catback-exhaust-system","title":"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System","description":"\u003ch4\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eWe are proud to introduce you to the state of the art Stone Exhaust Valvetronic Cat-Back Exhaust System, to enhance the performance and sound of your AUDI C7 RS6 with the  CWUB \u0026amp; CWBC engine, manufactured after 2013. Stone Exhaust has been developing world's best exhaust system since 1998, starting with 3D scanning and reverse engineering the OEM system, this allows the Stone engineers to design a 100% OEM fitment exhaust with precision. With their in-house dyno, your ADUI exhaust system is proven to produce more power with the enhanced Stone signature exhaust sound.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Cat-Back Valvetronic System comes with a separate remote controller that gives you full control of the exhaust, allowing you to open and close the valves with a click of a button. You can also set it in auto mode for the valves to open at a certain rpm automatically. The Stone Valvetronic system is a plug and play system, and connects to your OBDII port, which can be installed within a few minutes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSTONE Valvetronic ADUI C7 RS6 Exhaust System.\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValvetronic System\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eOne Piece Design\u003c\/li\u003e\n\u003cli\u003ePlug and Play OBDII controller\u003c\/li\u003e\n\u003cli\u003eOne Piece Design\u003c\/li\u003e\n\u003cli\u003eMachine Welding\u003c\/li\u003e\n\u003cli\u003eIn House Research and Development\u003c\/li\u003e\n\u003cli\u003e3D Scanning \u0026amp; Reverse Engineering\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRemote Control with On \/ Off \/ Auto settings \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDyno Developed In House\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEliminates drone found on the standard exhaust system\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOPF Delete\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003eStone offers an OPF delete, which can be included free of charge, this allows you to install the Stone Cat-Back exhaust system on OPF equipped cars without throwing an error code, thus coding out the OPF error code on the ECU is not required.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eR\u0026amp;D and 3D Scanning\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust engineers use reverse engineering by 3D scanning OEM parts to understand their functionality and identify weaknesses. Data has been collected continuously in order to analyze factors such as pipe diameter, route and degrees of the bending angles of the CWUB CWBC Exhaust System found on the AUDI C7 RS6. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDuring R\u0026amp;D, Stone Exhaust utilizes the 3D simulation software to stimulate the exhaust gas flow movement, thermal and pressure rise zone. Progressive improvements were continually made until the optimal performance was achieved.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" alt=\"Stone Exhaust System 3D Scanning Reverse Engineering UK - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7 Axis CNC Bending Machine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust System are constructed utilizing a 7 axis CNC Bending Machine which is the ultimate machine for high levels of precision delivery, necessary for industries such as the aerospace and defense industries.\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\u003c\/ol\u003e\n\u003cp\u003eWith the state-of-the-art bending machine, Stone Exhaust has achieved the industry’s standard to an impressive 98% roundness, whilst maintaining the wear of the outer bore at only 25% at 180\u003cstrong\u003e°\u003c\/strong\u003e. Airflow obstruction and welding fracture problems are prevented by utilizing this technology. With the combination of the CNC Bending machine, Reverse Engineering and 3D Design Scanning, Stone exhaust has created an integrally molded exhaust pipe with an accuracy error under 0.025mm. \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" alt=\"Stone Exhaust System UK Bending - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCrisscross and Overlapping Welding Technique\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe flange between the turbo and the downpipes reaches extreme temperatures (800℃ to 1100℃) which creates stress on the connection point. By utilizing both welding techniques to increases the width and penetration of welds. This increases the endurance and tolerance of these connection points, leading to quality products with reliable performance.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg height=\"1024x1024\" width=\"1024x1024\" style=\"float: none;\" alt=\"Stone Exhaust Art of Welding - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_1024x1024.jpg?v=1572828150\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Spot Welding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur highly skilled engineers perform direct spot welding to increase product strength. This is undertaken by mechanical welding arms, proven to achieve greater precision and penetration in their welds compared to manual welding, resulting in an end product that is a work of art. \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_2_1024x1024.jpg?v=1572828178\" alt=\"Stone Exhaust Art of Welding - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eCompatibility\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003e\u003cspan\u003eCWUB \/ CWBC Engine\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003eAUDI C7\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRS6 (2013-2018)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eStone Valvetronic System Installation \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"1195\" height=\"672\" src=\"https:\/\/www.youtube.com\/embed\/V5c4VEyO1EM\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003ePart Number\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003eRP508S\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured by\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStone Exhaust\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eStone Exhaust 2 Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePhotos \u0026amp; Videos\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eAudi CWUB C7 RS6 Typ 4G With Stone Eddy DP + Valvetronic Cat-back Sound\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"unreset\"\u003e\u003ciframe width=\"1195\" height=\"672\" src=\"https:\/\/www.youtube.com\/embed\/ZDMwq3w_Vps\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitted Photo(s)\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_AUDI_CWUB_CWBC_C7_RS6_Vavletronic_Catback_Exhaust_System_Stone_Exhaust_USA-1_600x600.png?v=1594317922\" width=\"600x600\" height=\"600x600\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_AUDI_CWUB_CWBC_C7_RS6_Vavletronic_Catback_Exhaust_System_Stone_Exhaust_USA-2_600x600.png?v=1594317936\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_AUDI_CWUB_CWBC_C7_RS6_Vavletronic_Catback_Exhaust_System_Stone_Exhaust_USA-3_600x600.png?v=1594317945\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_AUDI_CWUB_CWBC_C7_RS6_Vavletronic_Catback_Exhaust_System_Stone_Exhaust_USA-4_600x600.png?v=1594317957\"\u003e\u003c\/div\u003e\n\u003cp class=\"unreset\"\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Stone Exhaust Audi CWUB CWBC C7 RS6 Valvetronic Catback Exhaust System - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_AUDI_CWUB_CWBC_C7_RS6_Vavletronic_Catback_Exhaust_System_Stone_Exhaust_USA-5_600x600.png?v=1594317966\"\u003e\u003c\/div\u003e","brand":"Stone Exhaust","offers":[{"title":"Default Title","offer_id":65309626138973,"sku":"RP508S","price":5195.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1069\/0009\/5325\/files\/DSC05602use_1_3248f829-5d27-4b2f-a34e-9db4fbbe9854.jpg?v=1784574176"},{"product_id":"stone-exhaust-audi-cepa-8v-rs3-valvetronic-catback-exhaust-system","title":"Stone Exhaust Audi CEPA 8V RS3 Valvetronic Catback Exhaust System","description":"\u003ch4\u003eDescription\u003c\/h4\u003e\n\u003cp\u003eWe are proud to introduce you to the state of the art Stone Exhaust Valvetronic Cat-Back Exhaust System, to enhance the performance and sound of your AUDI 8V S3 with the CEPA engine.\u003c\/p\u003e\n\u003cp\u003eStone Exhaust has been developing world's best exhaust system since 1998, starting with 3D scanning and reverse engineering the OEM system, this allows the Stone engineers to design a 100% OEM fitment exhaust with precision. With their in-house dyno, your ADUI exhaust system is proven to produce more power with the enhanced Stone signature exhaust sound.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Cat-Back Valvetronic System comes with a separate remote controller that gives you full control of the exhaust, allowing you to open and close the valves with a click of a button. You can also set it in auto mode for the valves to open at a certain rpm automatically. The Stone Valvetronic system is a plug and play system, and connects to your OBDII port, which can be installed within a few minutes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSTONE Valvetronic AUDI 8V S3 Exhaust System.\u003c\/li\u003e\n\u003cli\u003eValvetronic System\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlug and Play OBDII controller\u003c\/li\u003e\n\u003cli\u003eOne Piece Design\u003c\/li\u003e\n\u003cli\u003eMachine Welding\u003c\/li\u003e\n\u003cli\u003eIn House Research and Development\u003c\/li\u003e\n\u003cli\u003e3D Scanning \u0026amp; Reverse Engineering\u003c\/li\u003e\n\u003cli\u003eRemote Control with On \/ Off \/ Auto settings\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDyno Developed In House\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEliminates drone found on the standard exhaust system\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimension \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e110cm x 33cm x 60cm \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e18.25 kg \u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOPF Delete\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003eStone offers an OPF delete, which can be included free of charge, this allows you to install the Stone Cat-Back exhaust system on OPF equipped cars without throwing an error code, thus coding out the OPF error code on the ECU is not required.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eR\u0026amp;D and 3D Scanning\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust engineers use reverse engineering by 3D scanning OEM parts to understand their functionality and identify weaknesses. Data has been collected continuously in order to analyze factors such as pipe diameter, route and degrees of the bending angles of the CEPA Exhaust System found on the AUDI 8V RS3. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDuring R\u0026amp;D, Stone Exhaust utilizes the 3D simulation software to stimulate the exhaust gas flow movement, thermal and pressure rise zone. Progressive improvements were continually made until the optimal performance was achieved.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/1_9336c8b0-c9ea-4822-891c-83490f630707.jpg?v=1572705528\" alt=\"Stone Exhaust System 3D Scanning Reverse Engineering UK - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvetronic System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Stone Valvetronic System was independently researched and developed in house. The system forgoes the conventional design of complicated wiring and the rubber inside the valve which is prone to aging, to ensure longevity.\u003c\/p\u003e\n\u003cp\u003eWith the Valvetronic remote control providing three modes to choose from: ON \/ OFF \/ AUTO, this allows for instant switching between modes in accordance to driving conditions faced. So, let the STONE Valvetronic System adapt to your vehicle’s needs.\u003c\/p\u003e\n\u003cp\u003eThe Valvetronic remote control has 3 modes, ON \/ OFF \/ AUTO, which allows you to open and close the valve at a click of a button. The Auto mode allows customization of the opening and closing of the valve at a predefined RPM.\u003c\/p\u003e\n\u003cp\u003e \u003cimg height=\"354\" width=\"532\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Untitled_e55d1881-dc86-4cb6-a91c-734c502c538f_480x480.png?v=1587977200\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7 Axis CNC Bending Machine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eStone Exhaust System are constructed utilizing a 7 axis CNC Bending Machine which is the ultimate machine for high levels of precision delivery, necessary for industries such as the aerospace and defense industries.\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\u003c\/ol\u003e\n\u003cp\u003eWith the state-of-the-art bending machine, Stone Exhaust has achieved the industry’s standard to an impressive 98% roundness, whilst maintaining the wear of the outer bore at only 25% at 180\u003cstrong\u003e°\u003c\/strong\u003e. Airflow obstruction and welding fracture problems are prevented by utilizing this technology. With the combination of the CNC Bending machine, Reverse Engineering and 3D Design Scanning, Stone exhaust has created an integrally molded exhaust pipe with an accuracy error under 0.025mm. \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/bending.jpg?v=1572739395\" alt=\"Stone Exhaust System UK Bending - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCrisscross and Overlapping Welding Technique\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe flange between the turbo and the downpipes reaches extreme temperatures (800℃ to 1100℃) which creates stress on the connection point. By utilizing both welding techniques to increases the width and penetration of welds. This increases the endurance and tolerance of these connection points, leading to quality products with reliable performance.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg height=\"1024x1024\" width=\"1024x1024\" style=\"float: none;\" alt=\"Stone Exhaust Art of Welding - Performance Parts Direct UK\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_1_1024x1024.jpg?v=1572828150\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Spot Welding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur highly skilled engineers perform direct spot welding to increase product strength. This is undertaken by mechanical welding arms, proven to achieve greater precision and penetration in their welds compared to manual welding, resulting in an end product that is a work of art. \u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0284\/6300\/5795\/files\/Stone_Exhaust_Art_of_Welding_-_2_1024x1024.jpg?v=1572828178\" alt=\"Stone Exhaust Art of Welding - Performance Parts Direct UK\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003eCompatibility\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003eCEPA Engine\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e8V\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRS3 Sportback (2015-2017)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e8.5V\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eRS3 (Facelift) \u003c\/span\u003e\u003cspan\u003eSaloon (2017+)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRS3 (Facelift) Sportback (2017+) \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eStone Valvetronic System Installation \u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"1195\" height=\"672\" src=\"https:\/\/www.youtube.com\/embed\/V5c4VEyO1EM\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eRP502NS (\u003cspan data-mce-fragment=\"1\"\u003eS\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003ealoon\u003c\/span\u003e)\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRP502S (Sportback)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMore Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStone Exhaust 2 Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEmission Notice \u003c\/strong\u003e\u003c\/p\u003e\n\u003cspan\u003eVarious U.S. states and the U.S. federal government have individual laws regulating the use of aftermarket exhaust parts and system, especially when the stock system is modified, remove, or if you are replacing original catalysts. Please consult the appropriate law department in your area before installing any aftermarket part or system on your vehicle to ensure compliance with all applicable laws. The purchasers are entirely responsible for informing themselves of the applicable laws where the products are to be used and to comply with those laws.\u003c\/span\u003e","brand":"Stone Exhaust","offers":[{"title":"Saloon","offer_id":65309629743453,"sku":"RP502NS","price":4409.82,"currency_code":"GBP","in_stock":true},{"title":"Sportback","offer_id":65309629776221,"sku":"RP502S","price":4409.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1069\/0009\/5325\/files\/StoneExhaustAUDICEPA8VRS3VavletronicCatbackExhaustSystem-3.jpg?v=1784574177"}],"url":"https:\/\/performancepartsdirect.co.uk\/collections\/26-5-2025-akrastone-comp-part-2.oembed","provider":"Performance Parts Direct","version":"1.0","type":"link"}