This Wossner forged piston kit is a +0.02mm oversize replacement specifically designed for Honda CRF450R models from 2015 onward. With a robust forged build and precise engineering, it supports high-performance applications while maintaining OEM compression characteristics.

Features

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  Forged construction for high strength and performance under extreme conditions

  
  


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  Elliptical design ensures a uniform bearing surface under thermal expansion

  
  


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  Promotes efficient heat transfer from combustion chamber to cylinder walls

  
  


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  Even distribution of thrust loads minimises the risk of piston collapse

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 96.02mm

  
  


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  Actual Piston Size: 95.98mm

  
  


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  Display Displacement: 449 cm³

  
  


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  Stroke: 62.10mm

  
  


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  Piston Clearance: 0.04mm

  
  


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  Wossner Compression Ratio: OEM

  
  


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  OEM Compression Ratio: 12.50:1

  
  


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  Dome Volume: -2.24 cm³

  
  


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  Compression Height: 20.60mm

  
  


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  Theoretical Weight: 241.00g

  
  


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  Circlip Part Number: CW19

  
  


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  Pin Part Number: WP028

  
  


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  Ring Set Part Number: 960ADS-2

  
  

Cross-Reference OEM Part Numbers

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  Part No: 56-W927.C.WO

  
  

Vehicle Fitments

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  Honda CRF450R (2015– )