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This listing is for APR Fits 21-25 Audi RS6/RS7 (C8) Catback Exhaust System

Part Number CBK0050

APR develops performance software and hardware for Volkswagen, Audi and Porsche vehicles from its engineering facility in Opelika, Alabama. Best known for ECU and transmission calibrations that unlock significant power from factory turbocharged engines, APR backs its software with a full range of supporting hardware including intakes, intercoolers, turbocharger systems, exhausts and suspension components. Every calibration is developed in-house on APR's own dynamometers and validated through extensive road and track testing, so owners get meaningful gains without sacrificing drivability or reliability. APR products are engineered to work together as a system, which is why enthusiasts building a staged Volkswagen or Audi so often stay within the range from first tune to final build.

The entire system is increased to a dual 3” (72mm) exhaust path. With the exhaust valves open, the exhaust gasses travel uninterrupted from the front of the system out through the exhaust tips. When exhaust gasses travel into the multichambered rear muffler / resonator, they continue uninterrupted and a Helmholtz resonator reduces drone frequences without restricting flow on the open-valve path. With the valves closed, exhaust gasses travel through a sound reduction path via a smaller 2.5” (63.5mm) pipe, reducing volume and allowing the system to act more civilized when needed. Finally the system terminates via oversized 8.23”x4.76” (211x21mm) RS-style oval exhaust tips. The tips feature a diamond black finish and a subtle APR logo for a refined touch.

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