Milltek Large Bore Downpipe Race Cat - VW Golf MK8 R / Audi S3 8Y - SSXVW675

The Milltek Large Bore Downpipe with integrated Hi-Flow Sports Cat is engineered for the VW Golf MK8 R and Audi S3 8Y (EA888 Gen 4). This system optimizes exhaust flow from the turbocharger to the cat-back, delivering dyno-proven gains in horsepower and torque while maintaining emissions compliance.

Constructed from T304L stainless steel with mandrel-bent 3" (76.2 mm) piping and a 200 CPSI high-flow catalytic converter, this downpipe uses OEM mounting points and requires no vehicle modification. The design integrates seamlessly with both OEM and Milltek cat-back exhaust systems. Stage 2 ECU software tuning is required to unlock full performance potential.

Fitment & Compatibility

• Direct factory fitment: VW Golf MK8 R (EA888 Gen 4)
• Direct factory fitment: Audi S3 8Y (EA888 Gen 4)
• Compatible with OEM cat-back or Milltek cat-back systems
• No modification required — uses OEM hangers and mounting points
• Requires Stage 2 ECU tuning

Direct factory fitment eliminates guesswork and installation delays.

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

Specifications

• Pipe diameter: 94mm (3.70")
• Fitting time: 3 to 4 hours, including removing the factory system
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• Audi > S3 > 2.0TFSI Quattro Saloon/Sedan 8Y > 2022 and Later
• Volkswagen > Golf > MK8 R 2.0 TSI > 2022 to 2024
• Volkswagen > Golf > MK8.5 R > 2025 and Later

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.