Sadly, Ford’s hardcore Focus RS500 was killed off last year but fortunately for owners of the hot hatch, the aftermarket industry is jam-packed with performance upgrades for the class-leader and one of the most respected tuners, Mountune, has just released its latest kit for the RS.

The brand’s new package incorporates an upgraded turbo re-circulation valve, high-performance alloy intercooler, an upgraded ECU and a high-flow hard pipe to increase power to 400 hp and 413 lb-ft of torque at the crank.

Mountune says the power gains result in improved acceleration, both off the line and down the quarter mile, while also increasing the car’s 266 km/h top speed. No exact performance gains have been publicized, but a 0-100 km/h time in the low 4 seconds is inevitable.

Focus RS owners in the UK and Europe can pick up the Mountune M400 package for a reasonable 3,000 euros (US$ 3,905).