Milltek Non-Resonated Cat-Back Exhaust - Mini Cooper S F66 - Downturn Tips - SSXM491

The Milltek Non-Resonated Cat-Back Exhaust System is engineered specifically for the F66 Mini Cooper S, delivering increased exhaust flow and engineered tone without resonance tuning. Direct OPF/GPF-back fitment with downturn tips maintains compatibility with OE or Sport diffusers-no cutting required.

Constructed from T304L stainless steel and mandrel-bent throughout, this system features a 3" (76.2mm) bore for optimal scavenging. Non-resonated design produces a more aggressive full-throttle character while maintaining street-legal operation. Hand-finished construction ensures durability and corrosion resistance. Uses OEM hangers and mounting points for factory-level fitment precision.

Fitment & Configuration

• OPF/GPF-back system (catalytic converter retained)
• Compatible with OE Standard or Sport Diffuser
• Downturn tips preserve factory diffuser appearance
• No modification required for installation
• Direct factory fitment using OEM attachment points

Every component is CNC-formed and hand-finished in house, delivering precision fitment and longevity that mass-produced alternatives cannot match.

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: 1 to 1.5 hours, including removing the factory system

Fitment

• New Mini > MK4 > Cooper S F66 2.0T B48 > 2024 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.