The Wossner forged piston kit with a 54 mm bore (53.94 mm actual) is specifically designed for the Honda CR125 models from 1985 to 1986. This standard-size piston is crafted for durability and efficient heat management. Its elliptical design allows for uniform expansion and consistent load distribution, reducing the risk of piston collapse. Manufactured in Germany to precise specifications, this piston supports high-performance engine requirements.

Features

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  Forged construction ensures high strength and resistance to thermal stress

  
  


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  Elliptical design enhances uniform bearing surface during heat expansion

  
  


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  Optimised for efficient combustion chamber heat transfer

  
  


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  Designed to prevent localised pressure and reduce the risk of piston collapse

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 54 mm (53.94 mm)

  
  


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  Piston Part Number: 8127DA

  
  


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  Lock Part Number: CW14

  
  


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  Pin Part Number: WP025

  
  


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  Ring Set Part Number: RSB5400 x 2

  
  


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  Display (Displacement): 124 cm³

  
  


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  Stroke: 54.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Compression Ratio (Wossner & OEM): 2-stroke

  
  


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  Compression Height: 28.00 mm

  
  

Cross-Reference OEM Part Numbers

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  13101-KA3-760

  
  


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  518M05400

  
  


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  56-W563+000.WO

  
  

Vehicle Fitments

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  1985 Honda CR125

  
  


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  1986 Honda CR125