Milltek Sport Large-Bore Downpipes are designed to improve both performance and sound. These downpipes feature a larger diameter compared to standard OEM parts, providing significantly more space for exhaust gases to exit the engine and pass through the system, which increases efficiency. The primary catalyst is removed from the exhaust system to create a freer-flowing exhaust, allowing the engine to operate more efficiently and increase performance. All Milltek Sport products are made in the UK and distributed to over 90 countries worldwide. - Larger diameter than OEM for increased exhaust flow - Primary catalyst removed for improved efficiency - Designed and manufactured in the UK - Distributed to over 90 countries Specifications: - Pipe Diameter: 76.20 - Race Product: Yes - EMarked: No Kit comes with: - MSAU663: LH 76mm Primary Cat Bypass Downpipe (fits LH Turbo) - MSAU663 - MSAU664: RH 76mm Primary Cat Bypass Downpipe (fits RH Turbo) - MSAU664 - MSAU692REP: RH Connecting pipe to OE Cat Back System - MSAU692REP - MSAU691REP: LH Connecting pipe to OE Cat Back System - MSAU691REP Vehicle Compatibility: - 2013-2018 Audi RS6 C7 4.0 TFSI biturbo quattro including Performance Edition - 2013-2018 Audi RS7 C7 Sportback 4.0 V8 TFSI biturbo including Performance Edition - 2012-2018 Audi S6 4.0 TFSI C7 quattro - 2012-2018 Audi S7 Sportback 4.0 TFSI quattro S tronic