The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the BMW M140i Non-GPF Model 2016 - 2018 Cat-Back System (Non-Resonated) Polished Daytona. Includes the following components: Centre Pipe Front Pipe Rear Silencer Link Pipe L/H Trim Connecting Pipe with Valve R/H Trim Connecting Pipe Polished 100 mm Daytona Trim Fitting Kit Fitting Instructions Pipe Diameter - 80 mm (3.15") Tailpipe - Polished 100 mm dual Daytona trim 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: Fits Non-GPF Model BMW M140i (F20, F21) 2016 - 2018 The valve requires fitment of the original equipment motor