Wiseco 4952M07900 Piston Kit - 2.00mm Oversize to 80.95mm, 13.5:1 Compression

Bore: 80.95mm

SPECIFICATIONS. Displacement: 263cc. Bore - Standard: 77.00mm. Bore - Actual: 79.00mm. Bore - Oversize: 2.00mm. Stroke: 53.60mm. Cylinders: 1. Compression Ratio - Actual: 13.5:1. Dome Type: Domed. Note: Nikasil Bore. ITEM CONTENTS. 3110XG - 79.00 mm Ring Set. CW16 - ROUND WIRE PIN LOCKS 16MM (PAIR). S742 - PistonPin 16 x 41.91mm NonChromed SW

All Wiseco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. Diamond turned finish from one of the many CNC computer controlled turning centers guarantees you a perfect finish with no size variation. Wiseco pistons can be installed in any of todays cylinder bore compositions. Wisecos state-of-the-art computerized manufacturing facility is dedicated to supplying both the high-perfomance racer and recreational enthusiast with the finest forged piston available in todays market place.

This item fits the following vehicle applications:
2008-2011 fits YAM YZ250F