Athena Piston Kit - S4F05400011B Yamaha YZ 125 1997-2004 Brand_J.w. Speaker Risers measure approximately 1-1/2" tall

Risers measure approximately 1-1/2" tall

0:1 Units Kit Product Name Piston Kit Style High Performance Bore - Oversize Standard Bore Size 94

Include reusable zip ties for assembly

less drag and reduced clutch noise

Athena Piston Kit - S4F05400011B Yamaha YZ 125 1997-2004 Brand_J.w. Speaker Risers measure approximately 1-1/2" tallFeatures High resistance to mechanical and thermal stresses Has been tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate it performance even in the most extreme conditions Equipped with piston rings that guarantee less friction with the OE cylinder producing a higher performance Made by reverse extrusion For OE cylinder. Specs Displacement 124 cc Product Name Piston Kit Compression Ratio Stock Piston