This Wossner forged piston kit is specifically designed for Husqvarna CR250 and WR250 models from 1992 to 1998 and features a +0.50mm oversize with a 67.50mm bore. Precision-engineered and manufactured in Germany, the piston is built for durability in two-stroke applications. Its elliptical shape ensures balanced thermal expansion and stress distribution, minimising the risk of piston collapse and enhancing overall performance through improved heat transfer from the combustion chamber to the cylinder wall.

Features

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  Forged piston design for superior strength and long-term reliability

  
  


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  Elliptical profile distributes bearing loads evenly under heat expansion

  
  


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  Reduces localised pressure to prevent piston failure

  
  


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  Supports efficient combustion heat dissipation

  
  


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  Precision-manufactured in Germany

  
  

Specifications

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  Bore Size: 67.50mm (+0.50mm oversize)

  
  


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  Actual Diameter: 67.44mm

  
  


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  Compression Height: 35.00mm

  
  


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  Stroke: 70.80mm

  
  


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  Displacement: 249 cm³

  
  


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  Piston Clearance: 0.06mm

  
  


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  Compression Ratio: 2-stroke (Wossner and OEM)

  
  

Cross-Reference OEM Part Numbers

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  Wossner Piston Kit Part No: 8015D050

  
  


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  Lock: CW18

  
  


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  Pin: WP033

  
  


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  Ring Set: RSB6750 x2

  
  

Vehicle Fitments

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  1992 Husqvarna CR250

  
  


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  1992 Husqvarna WR250

  
  


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  1993 Husqvarna CR250

  
  


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  1993 Husqvarna WR250

  
  


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  1994 Husqvarna CR250

  
  


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  1994 Husqvarna WR250

  
  


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  1995 Husqvarna CR250

  
  


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  1995 Husqvarna WR250

  
  


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  1996 Husqvarna CR250

  
  


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  1996 Husqvarna WR250

  
  


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  1997 Husqvarna CR250

  
  


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  1997 Husqvarna WR250

  
  


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  1998 Husqvarna CR250

  
  


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  1998 Husqvarna WR250