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C7 RS7 / S7 / RS6 / S6 / D4 S8 / A8 4.0T Downpipes

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Audi 4.0T Downpipe Video

RS7 Downpipe Video

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REDSTAR Performance Downpipes for all Audi S6 RS6 S7 RS7 A8 S8 with 4.0 TFSI engine.

More details


  • No Heat Shield
  • Includes Heat Shield
  • Competition (Catless)
  • GESI GEN1 UHO 300cpsi
  • GESI GEN2 400cpsi
  • HJS HD 200cpsi
  • No Gaskets
  • Include Gaskets

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Data sheet

Engine Type 4.0 TSFI V8 Twin Turbo

More info

Our downpipes utilize OEM X-crossing design and have OEM-spec bottom flanges. Those downpipes will fit the factory exhaust or any performance cat-back system. 

Compatible Vehicles:

  • 2012-2019 Audi S6/RS6 Quattro C7 C7.5 4.0 TFSI
  • 2012-2019 Audi S7/RS7 Quattro C7 C7.5 4.0 TFSI
  • 2012-2019 Audi A8/S8 Quattro D4 D4.5 4.0 TFSI

*Available Options:

  • Double-layer Heat shielding - is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes.
    Integrated thermal insulation reduces surface temperature up to 70%! What makes it an absolute winner, compared to usual thermal wrapping or ceramic coatings.
    It’s very important not just for safety reasons but also affects engine performance by reducing the underhood temperature. We highly recommend this option, especially for catted downpipes.
  • GESI UHO 300 cell- high-flow Metal Core Catalytic Converters. Rated 500-850hp each. EPA certified for use on OBD2 vehicles (1996 and newer) 49 States. (No CEL)
  • GESI GEN2 400cpsi- catalytic converters rated for 1000hp. The new GEN2 series provides a significant improvement in exhaust flow over stock and offers the latest emissions technology. EPA Compliant catalytic converters have been third-party lab tested to meet or exceed local emissions standards in North America (excluding California) and will address Check Engine light issues with proper engine setup. (No CEL)
  • HJS HD 200 cell- Ultra High-Performance catalytic converters. Made in Germany. (No CEL)
  • Optional Gasket set- 2 upper, 2 lower 

Main Features:

  • 3in OD with smooth transition to OEM-spec bottom flanges
  • OEM X-crossing design, no O2 wire extensions needed
  • designed to fit OEM Mid-Pipes
  • significant power gain
  • faster spool up and better throttle response
  • increasing the life of the turbos 
  • reducing under hood temperature
  • adds a very nice tone to the exhaust


Competition only - Removing of factory catalytic converters will trigger a сheck engine light (can be eliminated with optionally O2 sensors restrictors). Firmware update recommended to get maximum performance gains. 

This product is not designed to meet any emissions standards and is not for street or highway use. This product is not certified and may not be legal for use on emissions controlled vehicles in any country/jurisdiction. 

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