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. Manufactured from 304L aircraft grade stainless steel, these systems are built to withstand harsh conditions. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original system - Available in multiple configurations for sound customization - Constructed from 304L aircraft grade stainless steel - Made in the UK and distributed worldwide Specifications: - Pipe Diameter: 76.20 - Fitment Time: 1.5 to 2 hours (including removing OE system) - Race Product: No - EMarked: Yes - EMark Number: M135iF40 Kit comes with: - Adaptor for OE GBP - MSBM326 - Connecting Pipe - MSBM327 - Rear Silencer Assembly - MSBM328 - LH Valved Outlet Pipe - MSBM329 - RH Outlet Pipe - MSBM330 - Cerakote Black GT (round) 115 Exhaust Tip - MSTIP251 Vehicle Compatibility: - 2019 and later BMW 1 Series M135i xDrive 5 Door (F40 OPF/GPF Equipped)