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

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  Forged high-performance piston with skirt coating

  
  


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  Designed for efficient combustion heat transfer to cylinder walls

  
  


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  Elliptical design ensures uniform bearing surface under heat expansion

  
  


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  Evenly distributes thrust loads to reduce localised pressure

  
  


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  Prevents piston collapse under extreme operating conditions

  
  

Specifications

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  Bore size: 43.52mm

  
  


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  Piston size 43.47mm

  
  


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  Oversize: +0.02mm

  
  


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  Country of manufacture: Germany

  
  

Cross-Reference OEM Part Numbers

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  Wossner 8306DCB

  
  


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  56-W9991.C.WO

  
  

Vehicle Fitments

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  Yamaha YZ 65 2018–2019