This Wossner forged piston kit with a 55.25mm bore is an oversized (+1.50mm) replacement for the Sachs 125/7 engine. Manufactured in Germany, it delivers excellent strength and heat transfer performance. The elliptical piston design ensures even pressure distribution during thermal expansion, reducing localised stress and enhancing durability in two-stroke engine applications.

Features

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  Forged construction for superior strength and longevity

  
  


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  Engineered for efficient combustion chamber heat dissipation

  
  


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  Elliptical profile maintains consistent bearing surface under thermal load

  
  


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  Even distribution of thrust loads minimises piston stress and wear

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore: 55.25mm (+1.50mm Oversize)

  
  


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  Actual bore: 55.19mm

  
  


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  Display volume: 122 cm³

  
  


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  Stroke: 54.00mm

  
  


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  Clearance: 0.06mm

  
  


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  Wossner compression ratio: 2-stroke

  
  


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  OEM compression ratio: 2-stroke

  
  


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  Compression height: 38.00mm

  
  

Cross-Reference OEM Part Numbers

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  56-W9844.150

  
  


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  8287D150

  
  


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  Clip Part Number: CW16

  
  


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  Pin Part Number: WP136

  
  


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  Ring Set Part Number: RSB5525 (x2)

  
  

Vehicle Fitments

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  Sachs 125/7