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. Each system is constructed from 304L aircraft grade stainless steel, ensuring durability in harsh conditions. All products are manufactured in the UK and distributed globally. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Constructed from 304L aircraft grade stainless steel - Manufactured in the UK and distributed worldwide Specifications: - Pipe Diameter: 76.20 - Race Product: No - EMarked: No Kit comes with: - Polished GT (round) 90 Exhaust Tip, Standard - MSAU529 - Flexible Connecting Pipe - MSBM219 - Centre Connecting Pipe - MSBM220 - Rear Silencer Connecting Pipe - MSBM221 - Rear Silencer - Race - MSBM223 - Rear Silencer Connecting Pipe - MSBM224 Vehicle Compatibility: - 2012-2016 BMW 1 Series M135i 3 & 5 Door (F21 & F20, None xDrive)