Milltek Large Bore Downpipe - Mini Cooper S F55/F56 - SSXM429

Milltek Large Bore Downpipe with Hi-Flow Sports Catalyst for Mini Cooper S F55/F56. This downpipe is designed for direct fitment with OE cat-back exhaust systems and features mandrel-bent T304L stainless steel construction with a larger diameter than OEM parts, enabling superior gas flow and dyno-proven performance gains.

The hi-flow sports catalyst reduces backpressure while maintaining emissions compliance. Installation requires Stage 2 ECU remap. Uses OEM hangers and suspension mounts for hassle-free fitment—no modification required. Hand-finished construction ensures durability and aesthetic quality.

• T304L stainless steel, mandrel-bent construction
• Direct factory fitment to OE Mini cat-back systems
• Hi-flow catalyst for balanced performance and responsiveness
• Stage 2 ECU remap required for optimal results
• OEM hangers and mounts—no vehicle modification

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

Specifications

• Pipe diameter: 69.85mm (2.75")
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• New Mini > MK3 > (F55) Mini Cooper S 2.0 Turbo - 5 Door Hatch > 2014 and Later
• New Mini > MK3 > (F56) Mini Cooper S 2.0 Turbo > 2014 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.