The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed specifically for the Audi TT MK1 Quattro 180 & 225 BHP Cat-Back System (Resonated) Includes the following components: Centre silencer (resonated) Link pipe Black ceramic 100 mm Daytona trim Rear silencer Fitting kit Pipe Diameter - 70 mm (2.75") Tailpipe - Black ceramic coated 100 mm twin Daytona trim Fits To - OEM & Scorpion systems Red Power - Built to stir your soul! British Manufactured. All Scorpion exhausts are hand crafted by Scorpion automotive engineers in Derbyshire, UK Guarantee. All Scorpion car products are guaranteed for life Fittings/Instructions. All Scorpion products are supplied with everything needed to fit and drive, along with parts drawings and picture instruction where necessary PLEASE NOTE: For the 180 model a rear valance insert is required from the 225 model as exhaust is dual exit