The Wossner 8105DC piston kit is a high-performance forged piston designed for the Honda CR85 series. With a 47.52mm bore and 47.47mm piston diameter, this +0.02 oversize piston enhances durability and thermal efficiency in two-stroke engine configurations. Engineered with an elliptical profile, it provides balanced load distribution and prevents piston collapse under thermal stress. This German-made piston kit is ideal for maintaining factory specifications while ensuring robust engine performance.

Features

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  Forged piston construction ensures superior strength and durability

  
  


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  Designed for effective heat transfer from the combustion chamber to cylinder walls

  
  


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  Elliptical shape distributes thrust loads evenly and prevents localised pressure

  
  


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  Manufactured in Germany with high-precision engineering

  
  

Specifications

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  Bore: 47.52 mm

  
  


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  Piston Diameter: 47.47 mm

  
  


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  Display Displacement: 84 cm³

  
  


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  Stroke: 47.80 mm

  
  


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  Piston Clearance: 0.05 mm

  
  


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  Compression Height: 24.00 mm

  
  


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  Compression Ratio (Wossner and OEM): 2-stroke

  
  


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  Lock Part Number: CW14

  
  


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  Pin Part Number: WP058

  
  


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  Ring Set Part Number: RSB4750

  
  


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  Rod Part Number: P2003

  
  

Vehicle Fitments

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  Honda CR 85 2003 - 2009