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 globally. - Direct replacement for the original exhaust 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 - Installation Time: 2 to 2.5 hours (including removing OE system) - Race Product: Yes - EMarked: No Kit comes with: - Cerakote Black GT (round) 100 Exhaust Tip, LH Twin Tip - MSAU603 - Cerakote Black GT (round) 100 Exhaust Tip, RH Twin Tip - MSAU604 - LH Axle Pipe - MSBM336 - RH Axle Pipe - MSBM337 - Rear Silencer Assembly - MSBM338 - LH Outlet Pipe to Milltek Trims - MSBM341 - RH Valved Outlet Pipe to Milltek Trims - MSBM342 - Front Connecting Pipe - MSBM343 - GPF|OPF Bypass Section - MSBM344 - GPF|OPF Bypass LH Section - MSBM345 - GPF|OPF Bypass RH Section - MSBM346 Vehicle Compatibility: - 2019 and later BMW 3 Series G20 & G21 M340i xDrive Saloon & Touring (OPF/GPF models only) - 2020 and later BMW 4 Series G22 M440i Coupe (OPF/GPF equipped models only)