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 designed for a wide range of vehicles and are made in the UK. - Direct replacement for the original system - Available in multiple configurations for sound and tone adjustment - Manufactured 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 - Burnt Titanium GT (round) 115 Exhaust Tip - MSTIP253 Vehicle Compatibility: - BMW 1 Series M135i xDrive 5 Door (F40 OPF/GPF Equipped) 2019 and Later