Wossner forged piston kit engineered for Suzuki RM125 models from 1989 to 1999, featuring a 55.50mm bore for significant oversize repairs. This piston offers outstanding strength, superior heat transfer capabilities, and uniform load distribution. Its elliptical design minimises localised stresses under high-temperature conditions, reducing the risk of piston collapse. Manufactured in Germany with precision craftsmanship.

Features

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  Forged construction ensuring high strength and durability

  
  


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  Optimized design for effective combustion chamber heat transfer

  
  


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  Elliptical geometry promoting uniform pressure distribution

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 55.50mm

  
  


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  Actual Piston Size: 55.45mm

  
  


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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: 8055D150

  
  


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  Lock: CW15

  
  


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  Pin: WP032

  
  


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  Ring Set: RSB5550

  
  


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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