The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the BMW M140i (F20, F21)/M240i - (Non-GPF Model) 2016 - 2019 De-Cat Turbo-Downpipe. Includes the following components: De-cat turbo-downpipe 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 PLEASE NOTE: Will not fit to models with GPF\'s Engine management light may be activated, a Stage 2 ECU remap is recommended when fitting this product