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 and tone. All products are manufactured from 304L aircraft grade stainless steel for durability in harsh conditions. These performance exhaust systems are developed for a wide range of vehicles, with ongoing research and development to meet current performance requirements. All products are made in the UK and distributed to over 90 countries. - Direct replacement for the original exhaust system - Available in multiple configurations for sound and tone customization - Manufactured from 304L aircraft grade stainless steel - Designed for durability in harsh conditions Specifications: - Pipe Diameter: 76.20 - Race Product: No - EMarked: No Kit comes with: - F5133: Adapter Pipe 76.2 O.D. to 62.3 I.D. 110 long - MSBM225: Flexible Connecting Pipe - MSBM225 - MSBM226: Centre Silencer - MSBM226 - MSBM227: Rear Silencer Connecting Pipe - MSBM227 - MSBM228: Rear Silencer - MSBM228 - MSBM249: Outlet Pipe - MSBM249 - MSBM250: Mounting Bracket - MSBM250 - MSTIP193: Brushed Titanium GT (round) 90 Exhaust Tip, Standard - MSTIP193 Vehicle Compatibility: - 2014-2016 BMW 4 Series F32 428i Coupe (Manual Gearbox, without Tow Bar, None xDrive, N20 Engine Only)