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 exhaust volume and tone. Each system is constructed from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Constructed from 304L aircraft grade stainless steel 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: - Cerakote Black GT (round) 90 Exhaust Tip, Standard - MSAU532 - Rear Silencer - Road - MSBM222 - Front Connecting Pipe - MSBM275 - Centre Connecting Pipe - MSBM276 - Outlet Pipe (Non-Valved) - MSBM277 - LH Mounting Bracket - MSBM279 - RH Mounting Bracket - MSBM280 Vehicle Compatibility: - BMW 1 Series M140i 3 & 5 Door (F20 & F21 LCI, Non-OPF) 2015-2018