Milltek Sport Audi RS5 B9 2.9 V6 Turbo Coupe Large-Bore Downpipes

Milltek Sport's large-bore downpipes for the Audi RS5 (B9) 2.9 V6 Turbo Coupe replace the factory downpipes with a genuinely larger-diameter, less restrictive design, constructed from T-304 stainless steel throughout for long-term durability. Reducing backpressure at this point in the exhaust system typically delivers one of the most noticeable power and response gains available on a turbocharged platform, particularly when paired with a supporting ECU tune.

This version retains the factory catalytic converters, making it a sensible standalone upgrade for owners wanting improved flow without stepping into de-cat territory or the emissions considerations that come with it. The larger bore reduces restriction right at the point where boost pressure first meets a genuine bottleneck in the factory system, letting the twin-turbo V6 respond more immediately to throttle input.

Why Choose These Downpipes

• Genuinely larger diameter than the factory downpipes, reducing backpressure throughout
• T-304 stainless steel construction, built for long-term durability
• Retains the factory catalytic converters for continued emissions function
• Particularly effective when paired with a supporting ECU tune

Compatibility

• Audi RS5 (B9) 2.9 V6 Turbo Coupe