The Milltek Sport Secondary Cat-Back systems replace all OEM exhaust components located after the secondary catalyst. These systems are designed for those seeking improved sound and aesthetics. They serve as a direct replacement for the original system and are available in multiple configurations, allowing the owner to select the desired increase in exhaust volume or a more aggressive tone. Manufactured from 304L 'Aircraft' Grade stainless steel, these Cat-Back systems are built to withstand harsh conditions. All Milltek Sport performance exhaust systems are designed for a wide range of vehicles and are produced in the UK. - Direct replacement for the original exhaust system - Available in multiple configurations for sound customization - Constructed from 304L 'Aircraft' Grade stainless steel - Designed and manufactured in the UK Specifications: - Pipe Diameter: 63.50 - Race Product: No - EMarked: Yes - EMark Number: e24 70_157 2007_34 1978 00 Kit comes with: - MSBM215: Centre Silencer - MSBM215 - MSBM216: Rear Silencer - MSBM216 - MSTIP139: Cerakote Black GT (round) 80 Exhaust Tip - MSTIP139 Vehicle Compatibility: - 2008-2010 BMW 1 Series 135i Coupe E82 and Cabriolet E88 (N54) - 2010-2012 BMW 1 Series 135i Coupe E82 and Cabriolet E88 (N55)