This Wossner 8170DA standard bore piston kit with a 54.00mm diameter is specifically engineered for Honda CR125R models from 2005 to 2007. Crafted from forged material, it offers enhanced strength, efficient heat dissipation, and superior resistance to thermal stress, ensuring reliable performance in high-revving two-stroke engines.

Features

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  Standard bore forged piston for Honda CR125R two-stroke engines

  
  


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

  
  


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  Elliptical design improves bearing surface and load distribution

  
  


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  Prevents localised pressure and reduces risk of piston collapse

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore diameter: 54.00 mm

  
  


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  Display displacement: 125 cm³

  
  


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  Stroke: 54.50 mm

  
  


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  Clearance: 0.05 mm

  
  


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  Compression ratio: 2-stroke (Wossner and OEM specification)

  
  


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  Compression height: 28.00 mm

  
  

Cross-Reference OEM Part Numbers

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  13110-KSR-730

  
  


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  13120-KSR-730

  
  


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  13111-KV3-000

  
  


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  13111-KZ4-000

  
  


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  13121-KSR-731

  
  


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  94601-15000

  
  


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  Wossner 8170DA

  
  


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  Namura NX-10003

  
  


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  Wiseco 859M05400

  
  

Included Components

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  Piston kit part number: 56-W859.A.WO

  
  


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  Circlip: CW15

  
  


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  Wrist pin: WP032

  
  


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  Ring set: RSB5400

  
  


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  Connecting rod: P2009

  
  

Vehicle Fitments

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  2005 Honda CR125R

  
  


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  2006 Honda CR125R

  
  


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  2007 Honda CR125R