John Cooper Works

John Cooper Works (JCW) is an English company based in Farnborough, Hampshire, founded in 2000 by Michael Cooper, son of John Cooper, the racing car maker and tuner responsible for the original Mini Cooper. JCW produces tuning parts and accessories for BMW's new Mini.

Formally incorporated in January 2002, BMW acquired the rights to the name in January 2007 and bought out the company in 2008.

The first ever JCW kit was a 126 bhp (94 kW) upgrade for the Mini Cooper. The kit consisted of the following components:

Despite its price tag of over €2000, this kit only offered a power increase of 11 bhp (8.2 kW), a sportier exhaust note and a crisper throttle response. The main advantage was that these improvements, though fairly minor, could be made to the Cooper without jeopardizing the factory warranty. In 2004, JCW discontinued the Cooper kit and introduced a Sound Kit for the Cooper. The Sound Kit consisted of a unique air intake system, cat-back exhaust and an ECU remap.

The first JCW Tuning Kit to be made available for the Cooper S was an upgrade for the Cooper S, producing a total of 200 bhp (150 kW). Released in 2002, the kit consisted of the following components:

At the time, the kit could not be factory-ordered, but had to be retrofitted at a Mini dealer, but from late 2005 the Cooper S could be ordered with the upgrade straight from factory.

In 2005, an additional upgrade was launched that increased power further to 210 bhp (160 kW), with the following components:

A "JCW Sound Kit" was made available at the same time, consisting of the cat-back exhaust and the air filter, giving a sportier exhaust note and a 3 bhp (2.2 kW) power increase for around €1100.

In 2007, Mini released the JCW tuning kit for the new "R56" version of the car. This new version now being turbocharged as opposed to supercharged, the kit itself is very different from that of the previous Cooper S. Consisting of an uprated induction system, exhaust and ECU remap, this kit raises power 17 bhp (13 kW) to 192 bhp (143 kW). The torque figure climbs 10 Nm to 250 Nm (270 Nm with overboost). Acceleration from 0–100 km/h (0-62 mph) is now 6.8 seconds, and a top speed of 232 km/h (144 mph) is now possible. This kit is commonly referred to as the "Stage 1 Kit", although this nomenclature has never been officially employed by JCW or by BMW.

According to Mike Cooper, this kit would create "the fastest Mini ever produced" above all due to the extra torque and in-gear acceleration, which in certain driving situations will be even faster than the 218 bhp (163 kW) Mini JCW GP.

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