Milltek Sport Audi RS4 B9 2.9 V6 (OPF/GPF) Cat-Back Exhaust System

The B9 RS4's twin-turbo 2.9-litre V6 pairs genuine estate-car practicality with real performance credentials, and the factory exhaust, while far from bad, leaves real character on the table, tuned as much around noise regulations as outright drama. Milltek Sport's Cat-Back exhaust for the OPF/GPF-equipped Avant replaces everything from the gasoline particulate filter rearward, engineered to deliver genuine gains in flow, sound, and weight over the factory system while retaining the OPF/GPF unit itself for continued emissions compliance.

Constructed entirely from T-304 stainless steel, this system is built to outlast the car itself, resisting the corrosion that eventually catches up with mild steel factory systems, especially through wet European winters. Milltek's own sound engineers spend considerable time tuning each system's resonance and tone, striking a genuine balance between letting this twin-turbo V6 sound properly purposeful and avoiding the drone that can plague poorly engineered aftermarket systems on a long motorway drive.

Please select your type and tip finish at checkout: twelve configurations available, spanning Resonated, Part Resonated, and Non-Resonated tunes, each in a choice of Polished, Cerakote Black, Titanium, or Burnt Titanium oval tips.

Why Choose This Exhaust System

• Genuine gains in flow, sound, and weight over the factory system
• T-304 stainless steel construction throughout, built to outlast the factory system
• Retains the OPF/GPF unit for continued emissions compliance
• Twelve configurations spanning three sound profiles and four tip finishes
• Milltek's own sound engineering, letting the twin-turbo V6 sound properly purposeful

Compatibility

• Audi RS4 (B9) 2.9 V6 Turbo Avant, OPF/GPF Models