Milltek Sport Large-Bore Downpipes are designed to improve 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. When combined with the Hi-Flow Sports Cat, a significant increase in performance and a noticeable change in sound can be expected. All Milltek Sport performance exhaust systems are manufactured in the UK and distributed to over 90 countries worldwide. - Larger diameter than OEM for increased gas flow - Significant performance gains with Hi-Flow Sports Cat - Noticeable difference in exhaust sound - Manufactured in the UK and widely distributed Specifications: - Pipe Diameter: 76.20 - Race Product: Yes - EMarked: No Kit comes with: - Large-bore downpipe and hi-flow sports catalyst - MSBM253 Vehicle Compatibility: - 2014-2016 BMW 4 Series F32 428i Coupe (Automatic Gearbox, without Tow Bar, None xDrive, N20 Engine Only) - 2014-2016 BMW 4 Series F32 428i Coupe (Manual Gearbox, without Tow Bar, None xDrive, N20 Engine Only)