Milltek Sport Large-Bore Downpipes are designed to enhance both performance and sound. These downpipes feature a larger diameter compared to standard OEM parts, allowing more exhaust gas to exit the engine and pass through, which increases efficiency. All Milltek Sport performance exhaust systems are produced in the UK and distributed to over 90 countries. The range is continually expanding to meet the demands of various vehicles. - Larger diameter than OEM for improved exhaust flow - Designed to increase efficiency and sound - Manufactured in the UK and distributed globally Specifications: - Pipe Diameter: 76.20 mm - Installation Time: 3 to 4.5 hours (including removal of OE system) - Race Product: Yes - EMarked: No Kit comes with: - MSBM266: LH Primary Cat Rep Downpipe - MSBM266 - MSBM267: RH Primary Cat Rep Downpipe - MSBM267 - MSBM310: GPF/OPF Bypass Section with High Flow Sports Cat - MSBM310 Vehicle Compatibility: - 2019-2020 BMW 3 Series F80 M3, M3 Competition & M3 CS Saloon (OPF/GPF Models Only) - 2019-2020 BMW 4 Series F82/83 M4 Coupe/Convertible, M4 Competition & M4 CS Coupe (OPF/GPF equipped models only)