Mini John Cooper Works F56 / F57 Valved Exhaust System (2015-2021)

The Mini John Cooper Works F56 / F57 exhaust in detail.

The John Cooper Works F56 pushes the three-door Mini towards sport: compact size, a lively chassis and the B48, a 2.0-litre turbocharged four-cylinder from BMW’s modular family, delivering 231 hp and 320 Nm. The torque arrives early, the response is sharp, and the little front-wheel-drive car strings corners together with the agility that made its name. Our page covers it from 2015 to 2021.

Behind the wheel, the go-kart feel is definitely there; to the ear, much less so, because the factory exhaust smooths out the character of an engine with a lively, slightly hoarse voice that gains depth as you accelerate. With the valves open, our cat-back turns it into the little rocket its handling promises, with a crackling start-up, characterful acceleration and a sound that follows you through every corner; with the valves closed, your JCW stays an easy-going city car.

The system, built to your VIN, fits without welding with clamps and gaskets in about two hours, centre sections included; the valves respond to the factory control if your Mini has one, otherwise to the Rog remote.

This page sells a cat-back only, with no front section option: the B48 and its ECU stay standard, and the system transforms the voice and the weight at the rear, without promising extra horsepower. For a city car driven all year round, 304 stainless steel is the safest choice; titanium, around 40% lighter for the same design, brightens the note and comes in brushed, gold or purple.