In 2002, Ford launched its highest performance version of the Focus, called the Focus RS. It came with a 2.0-litre turbocharged "Duratec RS" engine, a Quaife ATB limited-slip differential, Brembo brakes, and a host of other performance changes, combined with a much more aggressive appearance, and was available only in Ford's Imperial blue. 70% of the components found on the Focus RS were unique, revised or uprated. This original Focus RS was only available in Europe with a limited run of 4501 cars being built; just under half (2147) of these were sold in the UK.