Milltek Large Bore Downpipe - Audi RSQ8 4.0 V8 Bi-Turbo - SSXAU956

The Milltek Large Bore Downpipe with integrated Hi-Flow Sports Cat is engineered to optimize exhaust flow and increase engine efficiency. Mandrel-bent T304L stainless steel construction with direct factory fitment—no modifications required.

Cast from premium T304L stainless steel with CNC-precision mandrel bending, this 3.0" (76.20mm) bore downpipe features a high-flow catalyst rated at 200 CPSI for emissions compliance without flow restriction. Hand-finished construction ensures durability and longevity across repeated heat cycles.

Fitment & Compatibility

• Direct factory fitment using OEM hangers
• High-flow sports catalyst maintains EC Approval compliance
• 3.0" mandrel-bent bore for optimized scavenging
• Integrated design pairs seamlessly with cat-back systems

This is precision stainless exhaust engineering, not a universal compromise.

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

Specifications

• Pipe diameter: 76.2mm (3.00")
• Fitting time: 3.5 to 4.5 hours, including removing the factory system
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• Audi > SQ7 > 4.0 V8 TT (Gasoline Equipped Vehicles Pre LCI) > 2021 to 2024

• 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.