The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the Audi TT RS MK3 & RS3 8V Facelift (Non-GPF Model) 2017 - 2018 Hi-Flow De-Cat Turbo-Downpipe Includes the following components: Turbo downpipe De-cat section Downpipe Y piece Fitting kit Pipe Diameter - 100 mm (4") Fits To - OEM & Scorpion systems Red Power - Built to stir your soul! Warranty - All Scorpion exhausts come with a lifetime warranty British Manufactured - All Scorpion exhausts are hand crafted by Scorpion automotive engineers in Derbyshire, UK Fittings/Instructions - All Scorpion products are supplied with everything needed to fit and ride, along with parts drawings and picture instructions where necessary