Milltek Sport Audi RS4 B9 2.9 V6 Turbo Avant (Non-OPF/GPF) 2018-2025 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 Avant replaces everything from the catalytic converter rearward, engineered to deliver genuine gains in flow, sound, and weight over the factory system, specifically for non-OPF/GPF models spanning 2018-2025.

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 Road + Resonated, Resonated, Non-Resonated, and Race Non-Resonated tunes, each in a choice of Polished, Cerakote Black, Titanium, or Burnt Titanium oval tips (availability of specific finishes varies by tune type).

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
• Twelve configurations spanning four sound profiles and four tip finishes
• Milltek's own sound engineering, letting the twin-turbo V6 sound properly purposeful
• Specifically engineered for non-OPF/GPF models, 2018-2025

Compatibility

• Audi RS4 (B9) 2.9 V6 Turbo Avant, Non-OPF/GPF, 2018-2025