Available exclusively from MAR Motorsport, piston rings for MK1 Focus RS 2.0 Turbo

Traditionally piston rings for the MK1 Focus RS have been unavailable as separate items, the only option was to replace the complete piston. We have worked directly with MAHLE, the Original Equipment supplier of the pistons and piston rings for this engine to Ford, to secure supply of replacement piston rings at standard bore size of 84.80mm.

These MAHLE piston rings are a direct replacement for the rings used on the original MAHLE pistons in the Ford Focus MK1 RS with the 2.0l turbo charged Zetec engine, engine code HMDA. These replacement parts are identical in every way to the rings fitted to the pistons when the vehicle left the Ford factory. This means not only can these engines now be overhauled cost effectively, but they can also be overhauled using parts in identical quality to the original.

The specification of the piston rings is as follows:

Bore (Ø)

Ring 1
1.50mm, Retangular ring, PVD coated

Ring 2
1.50mm, Taper faced napier ring, Phosphated

Oil Ring
2.00mm, Coil spring bevelled edge, Nitrided


These new range additions complement the range of Original Quality engine parts that are already available for the MK1 RS Focus. For further information on our range of parts for this engine then please Contact Us