MINI F65–F67 Performance Downpipe

Unlock the Voice Your Gen 4 MINI Was Suppressing

The factory downpipe on the Gen 4 MINI Cooper S and JCW prioritises emissions compliance over exhaust flow. The result is a restricted path that limits mid-range response and suppresses the overrun character MINI drivers actually want.

This performance downpipe uses a 100-cell race catalytic converter to open up that flow — more response, stronger sound, and the pops and bangs on overrun that the factory system actively prevents.

100-Cell Race Catalyst

The 100-cell high-flow catalyst replaces the factory restrictive catalyst while retaining the catalytic function. This is the key difference from a full decat — improved flow and sound without a fully open pipe that would trigger permanent check engine lights or fail basic emissions checks in most regions.

A dummy O2 sensor is included to prevent warning lights on vehicles without an ECU remap. An ECU remap is recommended to unlock the full potential of the freer-flowing exhaust path.

Pops, Bangs, and More Response

The combination of increased exhaust flow and reduced back pressure is what enables the overrun pops and bangs that make the Gen 4 MINI sound like a proper performance car. This effect is amplified further when paired with the F66–F67 GPF-back racing exhaust system — the two upgrades complement each other directly.

Compatibility

MINI Cooper S F65, F66, F67 (2.0L Turbo, 2024–present)
MINI Cooper JCW F65, F66, F67 (2.0L Turbo, 2024–present)

Pairing Note: This is a downpipe only. For a complete exhaust upgrade, pair with the MINI F66–F67 Racing Exhaust System. The two products are developed to work together.

Shipping: Shipping cost varies by destination and is not included in the listed price. Our team will confirm shipping charges by email after order placement.

Frequently Asked Questions

Does this require an ECU remap?
Not required, but strongly recommended. The dummy O2 sensor prevents warning lights on an unmapped vehicle. A remap unlocks the full performance benefit of the freer exhaust flow.

Will this produce pops and bangs on its own?
Yes, especially on overrun with an ECU remap or tuning software. The effect is more pronounced when paired with the GPF-back racing exhaust system.

Is the catalytic converter retained?
Yes. This is a high-flow cat downpipe, not a decat. The 100-cell catalyst retains catalytic function and is emissions-compliant in most regions for road use.

Does it fit Cooper S as well as JCW?
Yes. Compatible with both Cooper S and JCW variants of the F65, F66, and F67.

Complete Your Gen 4 JCW

Pairs well with the MINI F66–F67 Racing Exhaust System and the MINI F66 & F67 JCW Aero Kit.

Developed for Gen 4 MINI Performance

The 2.0L turbocharged engine in the Gen 4 MINI Cooper S and JCW responds well to exhaust flow improvements — the factory system is the primary restriction. This downpipe was developed for F65, F66, and F67 owners who want better response, the right exhaust note, and pops and bangs without going fully decat.

For owners searching for MINI Cooper F66 downpipe, MINI JCW performance downpipe, Gen 4 MINI exhaust upgrade, MINI Cooper S F67 downpipe, or MINI Cooper 100-cell race cat downpipe, this is the answer.