The Wossner 8168DC piston kit is a +0.02 oversize forged piston developed for the Kawasaki KX250 from 2005 to 2009. With a 66.42mm bore and 66.36mm piston diameter, this piston ensures high strength and optimal thermal performance in demanding two-stroke environments. The elliptical design minimises stress concentrations by promoting even expansion and pressure distribution. Manufactured in Germany, this piston kit meets the rigorous standards of quality and durability required for high-performance motocross applications.

Features

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  Forged construction delivers superior strength and extended service life

  
  


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  Engineered for effective combustion chamber heat dissipation to cylinder walls

  
  


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  Elliptical piston shape reduces localised stress and prevents piston collapse

  
  


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  Precision-manufactured in Germany to ensure consistency and reliability

  
  

Specifications

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  Bore: 66.42 mm

  
  


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  Piston Diameter: 66.36 mm

  
  


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  Display Displacement: 249 cm³

  
  


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  Stroke: 72.00 mm

  
  


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  Piston Clearance: 0.06 mm

  
  


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  Compression Height: 37.00 mm

  
  


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  Compression Ratio (Wossner and OEM): 2-stroke

  
  


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  Lock Part Number: CW18

  
  


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  Pin Part Number: WP033

  
  


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  Ring Set Part Number: RSB6640

  
  


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  Rod Part Number: P2022)

  
  

Vehicle Fitments

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  2005 Kawasaki KX250

  
  


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  2006 Kawasaki KX250

  
  


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  2007 Kawasaki KX250

  
  


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  2008 Kawasaki KX250

  
  


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  2009 Kawasaki KX250