The Mountune Performance package for the Ford Focus ST consists of a larger tailored ProAlloy intercooler, a high flow K&N air filter with a revised engine calibration for the potent 2.5-litre Duratec ST engine. Once upgraded power increases to 260PS at 5500rpm and torque is raised to 400Nm at 2,500 to 4,000rpm.

The upgrade will produce performance returns of 0-60mph in 5.9 seconds, a 0.6 second improvement over the standard ST, and 0-100mph in 14.1 seconds, 1.9 seconds faster than the standard model.

Once again Mountune have tested the upgrades on British B roads and on numerous laps of the famous Nurburgring Nordschleife.

A revised KW Suspension upgrade is also in development.

Developed by Mountune Performance in association with Ford Team RS, the upgrade will only be available at selected specialist Ford dealers. The upgrades have a minimum of 12 months/12,000-mile warranty and do not affect the vehicle warranty.

Retail price £1,096 including VAT (plus fitting)

Fitting time is estimated at 1.5 hours. Contact your nearest dealer for fitting charges.