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 combined with the Hi-Flow Sports Cat, a significant increase in performance and a noticeable change in sound can be expected. Note: Stage 2 ECU Remap Required. - Larger diameter than OEM for improved gas flow - Designed to increase efficiency and performance - Noticeable difference in exhaust sound Specifications: - Pipe Diameter: 76.20 - Race Product: Yes - EMarked: No Kit comes with: - MSAU717: Downpipe Turbo Elbow - MSAU717 - MSAU736: High Flow Cat Assembly with 200CPSI Cat with GPF/OPF Bypass - MSAU736 Vehicle Compatibility: - 2019 and later Audi RS3 Saloon / Sedan 400PS (8V MQB) - OPF/GPF Models - 2021 and later Audi RS3 Saloon / Sedan 400PS (8Y MQB EVO) - OPF/GPF Models - 2019 and later Audi RS3 Sportback 400PS (8V MQB - Facelift Only) - OPF/GPF Models - 2021 and later Audi RS3 Sportback 400PS (8Y MQB EVO) - OPF/GPF Models - 2020 and later Audi RSQ3 2.5T Sportback & SUV (OPF/GPF Equipped Models Only) - 2019 and later Audi TT Mk3 TTRS 2.5TFSI Quattro (OPF/GPF Models)