The Cat-Back systems are designed as direct replacements for the original exhaust system, offering improved sound and aesthetics. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume and a more aggressive tone if preferred. All products are manufactured from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. The performance exhaust systems are developed for a wide range of vehicles, with ongoing research and development to meet performance exhaust requirements. All products are made in the UK and distributed to over 90 countries. - 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 internationally Specifications: - Pipe Diameter: 66.50 - Fitment Time: 1 to 1.5 hours (including removal of OE system) - Race Product: No - EMarked: No Kit comes with: - MSBM222: Rear Silencer - Road - MSBM222 - MSBM275: Front Connecting Pipe - MSBM275 - MSBM276: Centre Connecting Pipe - MSBM276 - MSBM277: Outlet Pipe (Non-Valved) - MSBM277 - MSBM279: LH Mounting Bracket - MSBM279 - MSBM280: RH Mounting Bracket - MSBM280 - MSTIP225: Carbon Fibre Jet (round) 90 Exhaust Tip, Standard - MSTIP225 Vehicle Compatibility: - 2015-2018 BMW 1 Series M140i 3 & 5 Door (F20 & F21 LCI, Non-OPF)