Titanium Valved Catback Exhaust System for Audi RS4 RS5 B9 B9.5 2.9T

Part Number: 721814382631
Bull Boost Performance
$2,799.95
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Upgrade sound, performance, and weight reduction on your Audi RS4 or RS5 2.9T with the STRATEC Titanium Valved Cat-Back Exhaust System. Engineered for enthusiasts who demand premium materials and adjustable sound control, this system delivers an aggressive, motorsport-inspired exhaust tone when valves are open and refined, quiet operation when closed.

Constructed from high-grade lightweight titanium, this cat-back exhaust offers significant weight savings over stainless steel while providing excellent heat resistance and long-term durability. The valved muffler design allows on-demand sound adjustment, making it ideal for both daily driving and spirited performance use.


Key Features

  • Fits Audi RS4 & RS5 B9 / B9.5 2.9T

  • Full titanium construction for extreme weight reduction

  • Valved cat-back exhaust system with adjustable sound modes

  • Aggressive, high-energy exhaust tone with valves open

  • Quiet, refined sound with valves closed

  • Improves exhaust flow and throttle response

  • Precision TIG-welded for strength and premium finish

  • Direct bolt-on installation using factory mounting points


Sound Modes

  • Valves Open: Loud, sharp, and performance-focused exhaust note

  • Valves Closed: Refined, OEM-like tone for daily driving