This Wossner forged piston kit features a 47.50mm bore with a +0.50 oversize specification and is designed for the 1985 Honda CR80R two-stroke engine. Manufactured in Germany, the piston offers reliable structural strength and efficient heat transfer. Its elliptical profile ensures uniform surface contact under heat expansion, helping to prevent localised pressure and piston collapse during operation.

Features

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  Forged piston construction for enhanced durability

  
  


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  Elliptical design for consistent bearing surface under thermal expansion

  
  


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  Optimized heat transfer from combustion chamber to cylinder walls

  
  


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  Made in Germany

  
  


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  Includes piston, pin, locks, and ring set

  
  

Specifications

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  Bore Size: 47.50mm

  
  


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  Actual Bore: 47.45mm

  
  


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  Stroke: 47.80mm

  
  


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  Clearance: 0.05mm

  
  


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  Compression Ratio (Wossner and OEM): 2-stroke

  
  


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  Compression Height: 25.00mm

  
  


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  Displacement: 82 cm³

  
  

Cross-Reference OEM Part Numbers

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  Piston Kit Part No: 56-W517+050.WO

  
  


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  Wossner Piston PN: 8280D050

  
  


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  Lock P/N: CW13

  
  


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  Pin P/N: WP088

  
  


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  Ring Set P/N: RSB4750 (x2)

  
  

Vehicle Fitments

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  Honda CR80R (1985)