This Wossner 56.50mm (+0.50 oversize) forged piston kit is designed for the Kawasaki KX125 1987 model. It features advanced German engineering to optimise combustion heat transfer and enhance structural integrity under high-stress conditions. The elliptically designed piston improves load distribution, reducing the risk of localised stress and piston collapse. Suitable for two-stroke applications, this kit includes matching components for precise installation and performance.

Features

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  Forged piston construction for enhanced strength

  
  


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  Elliptical design ensures uniform bearing surface under heat expansion

  
  


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  Optimized for even thrust load distribution

  
  


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  Designed to transfer combustion heat effectively to cylinder walls

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore: 56.50mm

  
  


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  Actual diameter: 56.44mm

  
  


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  Displacement: 125 cm³

  
  


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  Stroke: 50.60mm

  
  


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  Clearance: 0.06mm

  
  


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  Compression height: 29.50mm

  
  


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  Compression ratio: 2-stroke

  
  

Cross-Reference OEM Part Numbers

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  Piston Kit Part No.: 56-W555+050.WO

  
  


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  Lock: CW16

  
  


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  Pin: WP036

  
  


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  Ring Set: RSB5650

  
  


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  Connecting Rod: P2037

  
  

Vehicle Fitments

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  Kawasaki KX125 1987