{"product_id":"apr®-15-20-audi-s3-304ss-3-valveless-cat-back-exhaust-system","title":"APR® (15-20) Audi S3 304SS 3\" Valveless Cat-Back Exhaust System","description":"\u003cp\u003e\u003cstrong\u003eCompatible: (2.0L)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2015 - 2020 Audi S3 \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cspan style=\"color: #018722;\"\u003e\u003cstrong\u003eTHIS PRODUCT CAN BE SHIPPED TO CALIFORNIA  \u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003ciframe width=\"1262\" height=\"954\" src=\"https:\/\/www.youtube.com\/embed\/OX0C5YwExmU\" title=\"APR Valveless S3 Catback Exhaust System\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003cbr\u003e\u003ciframe title=\"APR Valveless S3 Catback Exhaust System with APR Race DP\" src=\"https:\/\/www.youtube.com\/embed\/HJaaihjB7cY\" height=\"954\" width=\"1262\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"accordion-row\"\u003e\n\u003cdiv class=\"row-contents active\"\u003e\n\u003cdiv class=\"full_description\"\u003eThe APR Catback Exhaust System personalizes your vehicle's looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished stainless-steel piping give the exhaust note an aggressive growl without any restrictions, while our Helmholtz resonator reduces unwanted frequencies. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. A cast 3\" to quad 2.5\" rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the system, while looking tidy from under the rear bumper. Lastly removable 4\" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle. For the more track minded enthusiasts where weight, sound and price point all are highly desired metrics, the APR Valveless system is the desired configuration. In this configuration the axle back portion of the exhaust has the mufflers and valves removed. Weight drops considerably and the system becomes more aggressive. The system is louder and more aggressive, but thanks to the center Helmholtz chamber, drone is reduced, giving a more pleasant, yet aggressive driving experience. However, when upgrading other exhaust components, the system transforms and becomes unapologetically raw with maximum aggression - A true track enthusiast's dream.\u003c\/div\u003e\n\u003cul class=\"productpage_list\"\u003e\n\u003cli\u003eT304 stainless-steel construction\u003c\/li\u003e\n\u003cli\u003eArgon-back-purged TIG welding throughout\u003c\/li\u003e\n\u003cli\u003eSingle 3\" to quad 2.5\" mandrel-bent brushed tubing\u003c\/li\u003e\n\u003cli\u003eUltra-smooth cast 3\" to quad 2.5\" splitter\u003c\/li\u003e\n\u003cli\u003eAggressive, unrestricted exhaust note\u003c\/li\u003e\n\u003cli\u003eBrushed-finished straight-through Helmholtz drone frequency reducing resonator\u003c\/li\u003e\n\u003cli\u003ePolished 4\" slash-cut exhaust tips (removable and upgradable)\u003c\/li\u003e\n\u003cli\u003eRugged and precise mounting brackets\u003c\/li\u003e\n\u003cli\u003eOEM style slip clamps and Torca AccuSeal T304 tip clamps\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on fit\u003c\/li\u003e\n\u003cli\u003eLow-profile design, suitable for lowered vehicles\u003c\/li\u003e\n\u003cli\u003eLarger diameter piping compared to stock\u003c\/li\u003e\n\u003cli\u003eLarger diameter tips compared to stock\u003c\/li\u003e\n\u003cli\u003eLighter than stock\u003c\/li\u003e\n\u003cli\u003eIn-house design with world-class manufacturing and quality control\u003c\/li\u003e\n\u003cli\u003eEasy to install\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-row\"\u003e\n\u003cdiv class=\"row-contents active\"\u003e\n\u003ctable cellspacing=\"0\" class=\"attributes-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eBending\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eMandrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eBrackets\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ePrecise\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eBrand\u003c\/th\u003e\n\u003ctd class=\"data\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Brand\" itemprop=\"brand\"\u003eAPR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eClamp Style\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eSlip Clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eEmission Code\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eExit Tube Diameter (in)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMaterial\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eT304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMuffler Finish\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBrushed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eMuffler Style\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eHelmholtz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eProduct Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eExhaust Catback System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eSplitter\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eCast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTip Count\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTip Diameter (in)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTip Finish\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ePolished Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTip Style\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eSingle Wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTips Removable\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTube Connection\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eButt Joint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTube Diameter (in)\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eTube Finish\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eBrushed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eValves\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eWelding\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eTIG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003eUPC\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e810009932093\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"label\"\u003ePart Number\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eCBK0019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFounded in 1997, APR is the global leader in performance aftermarket products for Volkswagen, Audi, Seat, Skoda, Porsche, and other vehicles. APR develops and manufactures hardware, software, calibration \u0026amp; data-logging tools for engine and transmission controllers, including intakes, exhaust systems, intercoolers, turbocharger systems, suspension, brake systems, wheels, and more. APR delivers software via a 24-hour automated global delivery system from its 80,000 square foot state of the art facility in Opelika, Alabama\u003cbr\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003cbr\u003eInstall Guide:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/documents.goapr.com\/tl100112_mqb_r_s3_catback_web.pdf\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Wrench_small.jpg?v=1528997396\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/Wrench_small.jpg?v=1528997396\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/images.holley.com\/prop65_warning.png\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/images.holley.com\/prop65_warning.png\"\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWarranty:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/10secondracing.com\/pages\/apr%C2%AE-product-warranty\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/10secondracing.com\/pages\/apr%C2%AE-product-warranty\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/APR_LOGO_2bfb9bc8-59f2-4489-80bd-6555362b6aa9_2048x2048.png?v=1622758058\" alt=\"\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/files\/APR_LOGO_2bfb9bc8-59f2-4489-80bd-6555362b6aa9_2048x2048.png?v=1622758058\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"APR®","offers":[{"title":"Default Title","offer_id":39821010272350,"sku":"CBK0019","price":1135.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/5315\/8515\/products\/ScreenShot2022-10-10at4.58.30PM.png?v=1665435789","url":"https:\/\/10secondracing.com\/en-gb\/products\/apr%c2%ae-15-20-audi-s3-304ss-3-valveless-cat-back-exhaust-system","provider":"10 Second Racing","version":"1.0","type":"link"}