APR's cat-back exhaust for the C8 RS6 and RS7 is a complete catalyst-back system, including downpipes, built from T304 stainless steel with mandrel-bent brushed piping and TIG welding throughout. Dual 3in (72mm) paths flow uninterrupted with the valves open, while a smaller 2.5in (63.5mm) closed-valve path and an integrated Helmholtz resonator reduce volume and drone when cruising. Valve-controlled rear mufflers adjust sound to driving style, and APR measures gains of 9 HP and 16 ft-lbs at all four wheels. Quad exits feed dual 8.23x4.76in RS-style diamond black oval tips with an APR logo.
| Type | Catalyst-back exhaust system, valved (includes downpipes) |
| Material | T304 stainless steel |
| Finish | Brushed, with 8.23x4.76in diamond black oval tips |
| Quantity | 1 |
| Part Number | CBK0050 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023 | Audi | RS6 Avant | Base |
| 2025 | Audi | RS6 Avant | GT |
| 2024-2026 | Audi | RS6 Avant | Performance |
| 2021-2023 | Audi | RS7 Sportback | Base |
| 2024-2026 | Audi | RS7 Sportback | Performance |
