The Wossner 8100DC piston kit is a +0.02 oversize forged piston tailored for the 2004 Honda CR125. With a 54.02mm bore and 53.97mm piston diameter, this piston delivers high durability and optimal thermal performance under the rigors of two-stroke operation. Its elliptical design ensures even pressure distribution during heat expansion, helping to prevent localised stress and piston failure. Precision-manufactured in Germany, this piston kit is ideal for performance-focused rebuilds.

Features

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  Forged construction provides exceptional strength and durability

  
  


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  Engineered for efficient combustion chamber heat transfer to the cylinder walls

  
  


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  Elliptical shape allows uniform expansion and reduces localised pressure points

  
  


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  Manufactured in Germany for high accuracy and performance reliability

  
  

Specifications

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  Bore: 54.02 mm

  
  


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  Piston Diameter: 53.97 mm

  
  


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  Display Displacement: 125 cm³

  
  


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  Stroke: 54.50 mm

  
  


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  Piston Clearance: 0.05 mm

  
  


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  Compression Height: 28.00 mm

  
  


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  Compression Ratio (Wossner and OEM): 2-stroke

  
  


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  Lock Part Number: CW15

  
  


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  Pin Part Number: WP032

  
  


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  Ring Set Part Number: RSB5400

  
  


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  Rod Part Number: P2009

  
  

Vehicle Fitments

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  2004 Honda CR125