The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the Audi TT RS MK2 2009 - 2014 Secondary Cat-Back System (Resonated) (Valved) Includes the following components: Resonated centre section Link pipe Rear silencer L/H tailpipe with valve R/H tailpipe Fitting kit Pipe Diameter - 80 mm (3.15") Fits To - OEM & Scorpion systems Vehicle Specific - Designed for this model 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