PISTON KIT YAMAHA YZ 65 2018-2020, WOSSNER 8306DC, 43.50mm

This Wossner piston kit is intended for Yamaha YZ 65 models from 2018 to 2019. With a bore size of 43.52mm and a +0.02mm oversize, this forged piston provides a precise fit, high thermal stability, and excellent strength for high-performance use. Manufactured in Germany, it is built to endure the stresses of off-road racing conditions.

Features

• Forged high-performance piston with skirt coating

• Designed for efficient combustion heat transfer to cylinder walls

• Elliptical design ensures uniform bearing surface under heat expansion

• Evenly distributes thrust loads to reduce localised pressure

• Prevents piston collapse under extreme operating conditions

Specifications

• Bore size: 43.52mm

• Piston size 43.47mm

• Oversize: +0.02mm

• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Wossner 8306DCB

• 56-W9991.C.WO

Vehicle Fitments

• Yamaha YZ 65 2018–2019