MilltekLarge Bore DownpipeFitment: Audi RS3 8V 8Y & TTRS MK3

Overview

The Milltek Cat Back Large Bore Downpipe with Hi-Flow Sports Cat is engineered for direct fitment to Audi RS3 (8V/8Y) and TTRS MK3, delivering measurable gains in exhaust flow efficiency and power output. This component pairs seamlessly with both OEM and Milltek cat-back exhaust systems.

Constructed from T304L stainless steel with mandrel-bent 3" (76.2 mm) bore, this downpipe features a high-flow sports catalyst rated at 200 CPSI (cells per square inch) for optimal scavenging without sacrificing emissions compliance. Direct factory fitment requires no modification. Stage 2 ECU software recommended for full potential.

Details

Fitment Notes

• Audi RS3 Sedan (8V) and Sportback (8V)
• Audi RS3 Sedan (8Y) and Sportback (8Y)
• Audi TT RS MK3 (FV)
• Compatible with OEM and Milltek cat-back systems

This downpipe is developed in-house and tested to deliver repeatable power gains without compromise on longevity or fitment quality.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

See all Audi RS3 8V exhausts and Audi RS3 8Y exhausts from Milltek.

Fitment