Left and right front silencers designed for Audi RS6 and RS7 C8 4.0 V8 bi-turbo models. Suitable for both Performance Edition and standard versions, including OPF/GPF and non-OPF/GPF variants. Installation time is estimated at 1.5 to 2.5 hours, including removal of the original equipment system. - Pipe diameter: 80.00 mm - Not a race product - Not E-marked - Estimated installation time: 1.5 to 2.5 hours Kit comes with: - MSAU744: LH Front Silencer - MSAU745: RH Front Silencer Vehicle Compatibility: - 2020 and later Audi RS6 C8 4.0 V8 bi-turbo Performance Edition (Non OPF/GPF, USA/ROW Models) - 2019 and later Audi RS6 C8 4.0 V8 bi-turbo Performance Edition (OPF/GPF Models) - 2019 and later Audi RS7 C8 4.0 V8 bi-turbo (Non OPF/GPF, US/ROW Models) - 2019 and later Audi RS7 C8 4.0 V8 bi-turbo (OPF/GPF Models)