4858M07700 Yamaha YZ250F 01-04 Wiseco Piston Kit – 77.00 Mm Bore GP Series 2-stroke pistons are

GP Series 2-stroke pistons are up to the challenge

Engineered

Designed for all-purpose 2-stroke riding

ArmorGlide skirt coating reduces friction to optimize performance potential

Gasket kits supply all gaskets and seals specified under one part number

4858M07700 Yamaha YZ250F 01-04 Wiseco Piston Kit – 77.00 Mm Bore GP Series 2-stroke pistons areWiseco 4 Stroke Forged Series Piston Kit, 77. 00 mm Bore, 13. 5: 1 CR The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high performance 4 strokes. Today, Wisecos forged 4 stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding,