Milltek Large Bore Downpipe and Hi-Flow HJS Cat for Audi 8Y S3 & VW MK8 Golf R (2022+)

Product Description

Upgrade your Audi 8Y S3 or VW MK8 Golf R with the Milltek Large Bore Downpipe and Hi-Flow HJS Cat. Designed to reduce back-pressure and improve exhaust gas flow, this system supports increased horsepower and torque when paired with proper tuning.

Constructed from high-quality stainless steel with a high-flow catalyst, this downpipe is engineered for durability, performance, and direct-fit installation.

Key Features and Benefits

• Large bore construction for improved exhaust flow
• Improved turbo response
• High-flow 200CPSI HJS catalyst
• High-quality stainless steel construction
• Precision fitment
• Supports Stage 2 tune

Vehicle Compatibility

• Audi 8Y/8Y.2 S3 (2022+)
• Volkswagen MK8/MK8.5 Golf R (2022+)

Installation and Notes

• Select OE or Milltek exhaust fitment
• Stage 2 ECU tune required
• Professional installation recommended
• Verify hardware and clamps during installation
• Check for leaks after installation

Frequently Asked Questions

Q: Will this increase power?
A: Yes. A larger-bore downpipe improves flow and supports higher power levels with proper tuning.

Q: Do I need an ECU tune?
A: Yes. A Stage 2 tune is required.

Recommended Upgrades

• ECU tune
• High-flow air intake
• High-flow catback exhaust system

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