Wossner forged piston kit designed for Suzuki RM125 models from 1989 to 1999. This piston features a 54.50mm bore, delivering excellent strength, precise heat transfer, and optimised load distribution. The elliptical design provides a uniform bearing surface, reducing localised stresses during thermal expansion and helping to prevent piston collapse. Manufactured in Germany for high precision and durability.

Features

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  Forged construction for enhanced strength and longevity

  
  


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

  
  


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  Elliptical design for even load distribution and minimised localised pressure

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 54.50mm

  
  


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  Actual Piston Size: 54.45mm

  
  


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  Display Capacity: 123 cm³

  
  


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  Stroke: 54.00mm

  
  


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  Clearance: 0.05mm

  
  


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  Compression Ratio (Wossner): 2-stroke

  
  


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  Compression Ratio (OEM): 2-stroke

  
  


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  Compression Height: 29.50mm

  
  

Cross-Reference OEM Part Numbers

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  Piston Kit: 8055D050

  
  


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  Lock: CW15

  
  


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  Pin: WP032

  
  


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  Ring Set: RSB5450

  
  


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  Additional Part Number: 56-W641.C.WO

  
  

Vehicle Fitments

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  1989 Suzuki RM 125

  
  


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  1990 Suzuki RM 125

  
  


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  1991 Suzuki RM 125

  
  


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  1992 Suzuki RM 125

  
  


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  1993 Suzuki RM 125

  
  


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  1994 Suzuki RM 125

  
  


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  1995 Suzuki RM 125

  
  


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  1996 Suzuki RM 125

  
  


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  1997 Suzuki RM 125

  
  


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  1998 Suzuki RM 125

  
  


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  1999 Suzuki RM 125