Ford is offering two dealer-fit performance options for its Fiesta ST customers in the UK.

The Mountune Performance Stage 1 package will retail at £1,435 (plus fitting) and consists of a high-flow air induction system, a high performance exhaust system including high flow catalyst and tubular manifold, and re-calibration of Ford’s 2.0-litre Duratec ST engine to produce 163bhp.

The more powerful Mountune Performance Stage 2 package will cost £1,838 (plus fitting) and adds new camshafts and valve springs to the basic package to deliver 183bhp.

Developed by the Ford Team RS in a new association with Roush Technologies, which owns the Mountune Racing motorsport brand, these packages will only be available at specialist Ford dealers.

The upgrades have a minimum of 12 months/12,000 miles dealer warranty up to a maximum of three years/36,000miles.

The upgrade kits do not affect the vehicle warranty and will be available from the selected Ford dealers from March 2.

The first dealers to offer these upgrades will be Dagenham Motors in Woodford, London, Brunel Ford in Bristol, Heartlands Ford in Birmingham, Polar Ford in Warrington and Polar Ford in Castleford.

Further dealers will be added to this list during 2008.