The Cat-Back systems are designed as direct replacements for the original exhaust, offering improved sound and aesthetics. Multiple configurations are available, allowing the owner to select the desired increase in exhaust volume or a more aggressive tone. All products are manufactured from 304L aircraft grade stainless steel to ensure durability in harsh conditions. The range covers an expanding selection of vehicles, with ongoing research and development to meet performance exhaust requirements. All products are made in the UK and distributed to over 90 countries worldwide. - Direct replacement for the original exhaust system - Multiple configurations for sound and tone adjustment - Manufactured from 304L aircraft grade stainless steel - Made in the UK and distributed globally Specifications: - Pipe Diameter: 69.85 - Race Product: No - EMarked: No Kit comes with: - Centre Silencer Delete Pipe - MSAU570REP - LH Front Pipe Assembly - MSAU587REP - RH Front Pipe Assembly - MSAU588REP - ValveSonic LH Rear Silencer - MSAU589 - ValveSonic RH Rear Silencer - MSAU590 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