APR Stainless Steel Cat-Back Exhaust - Audi RS6 / RS7 (C8) 2021-2026 - Diamond Black Tips

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.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy