Forged aluminium construction that is CNC machined to exact tolerances for performance and durability. Raises compression ratio for a performance boost throughout the rpm range.
2-ring design has less drag than 3-ring design resulting in additional horsepower. Machined valve pockets provide additional valve clearance when used with higher lift camshafts.
Kit includes piston, piston rings, piston pin, and clips.
Raises compression ratio to 14.0:1. Uses stock rings for convenience.
Note: Must use 100 octane race fuel when using the High Compression Piston Kit. Replacement gudgeon pin use: 17D-E16D0-V0. Replacement gudgeon circlips use: 17D-E16E0-V0
- 2005 – 2014 WR250F
- 2005 – 2013 YZ250F