The Cat-Back systems are designed as direct replacements for the original exhaust, offering improved sound and aesthetics. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume or a more aggressive tone. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The performance exhaust systems are made in the UK and distributed to over 90 countries worldwide. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed globally Specifications: - Pipe Diameter: 66.50 - Fitment Time: 1 to 1.5 hours (including removing OE system) - Race Product: No - EMarked: No Kit comes with: - Polished GT (round) 90 Exhaust Tip, Standard - MSAU529 - Rear Silencer - Road - MSBM222 - Front Connecting Pipe - MSBM275 - Centre Connecting Pipe - MSBM276 - LH Mounting Bracket - MSBM279 - RH Mounting Bracket - MSBM280 - Outlet Pipe (Non-Valved) - MSBM277 Vehicle Compatibility: - 2015-2018 BMW 1 Series M140i 3 & 5 Door (F20 & F21 LCI, Non-OPF)