APR Catback Exhaust System For Audi RS Q8 | CBK0051

The APR Catback Exhaust System (CBK0051) is the definitive performance exhaust for the Audi RS Q8. This full-length, premium T304 stainless steel system is engineered to unleash the raw, menacing character of the twin-turbo V8. Starting with high-quality cast flanges for a smooth transition from the factory catalyst pipes, the system upgrades the primary piping to massive 3" mandrel-bent tubing. Every joint is meticulously argon back-purged and TIG-welded to ensure maximum strength and a lifetime of performance.

The system features a sophisticated quad-path exit strategy: dual 3" valved paths and dual 2.5" non-valved paths. By integrating with the factory ECU-controlled valve actuators, the RS Q8 retains its dual personality. Under wide-open throttle, the valves open to deliver a "rowdy," fire-breathing V8 roar. Conversely, during normal driving, the valves close to reduce volume and eliminate drone, leaving you with a pleasant, low-frequency rumble that remains civil for the neighborhood.

Features:

• Full-Length System: Replaces everything from the factory catalytic converters back for a complete performance overhaul.
• High-Flow Cast Inlets: Ultra-smooth cast downpipe inlets provide a seamless transition from the factory turbo pipes.
• Active Valve Technology: Dual exhaust valves allow for a "menacing" wide-open sound and a "civilized" low rumble depending on drive mode.
• Superior Construction: Hand-crafted T304 stainless steel with argon back-purged TIG welding for world-class quality.
• Rugged Reliability: Features OEM-style flex sections that are designed not to collapse or fail under the high heat of the 4.0T engine.
• Plug-and-Play: Designed to fit perfectly with factory mounting points and electronic valve actuators.

Technical Specifications:

Installation Instructions