The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the BMW M2 F87 (Non-GPF Model) 2016 - 2018 Hi-Flow De-Cat Turbo-Downpipe. Includes the following components: De-cat downpipe Fitting kit Fitting instructions 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