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. When used with the Catalyst Bypass Pipe, significant power gains can be achieved without restriction from a catalyst. All Milltek Sport performance exhaust systems are manufactured in the UK and distributed to over 90 countries worldwide. - Larger diameter than OEM for improved gas flow - Designed for increased efficiency and performance - Compatible with Catalyst Bypass Pipe for maximum power gain - Manufactured in the UK and distributed globally Specifications: - Pipe Diameter: 70.00 - Fitment Time: 3 to 3.5 hours (including removing OE system) - Race Product: Yes - EMarked: No Kit comes with: - MSAU742REP: LH Decat Downpipe & GPF Bypass - MSAU742REP - MSAU743REP: RH Decat Downpipe & GPF Bypass - MSAU743REP Vehicle Compatibility: - 2019 and later Audi RS4 B9 2.9 V6 Turbo Avant (OPF/GPF Models) - 2019 and later Audi RS5 B9 2.9 V6 Turbo Coupe (OPF/GPF Models) - 2019 and later Audi RS5 B9 2.9 V6 Turbo Sportback (OPF/GPF Models)