Milltek Sport Audi RS3 8V Large-Bore Downpipe

Milltek Sport's large-bore downpipe for the Audi RS3 Saloon/Sedan 400PS (8V MQB) replaces the factory downpipe 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 converter, 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 turbocharged five-cylinder respond more immediately to throttle input.

Why Choose This Downpipe

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

Compatibility

• Audi RS3 Saloon/Sedan 400PS (8V MQB)