The MED/Omega forged 998 semi-slipper piston is perfect for high performance small-bore engines, the plus-0.020" particularly successful in the Mini Se7en race series, and plus-0.040" in Ministox and autograss. 

CNC machined from lightweight alloy forgings, the pistons have been designed to be as light as possible, at only 236 grams for the 20 size including 5/8" pin and rings.

Tech spec

• 0.020" and 0.040" sizes for the 998cc engine

• Super lightweight semi-slipper design

• High strength for full competition usage 

• Flat-top crown

• Made in the UK exclusively for MED

• Lightweight 5/8" floating gudgeon pins

Please see the additional information tab for more detail and advice. 

For use with either fixed or fully floating pins and supplied with a set of special wire circlips. 

Supplied as a balanced set of four with gudgeon pins, clips and piston rings, which are also available separately.