This Wossner piston kit features a 55.50 mm bore size with a 55.44 mm actual piston diameter and is designed for use in Suzuki RM125 models from 1985 to 1986. Forged for increased strength and durability, the piston is engineered to enhance combustion chamber heat transfer to the cylinder walls. The elliptical design helps maintain uniform bearing surface under heat expansion, evenly distributing thrust loads and reducing the risk of piston collapse. Manufactured in Germany for precision and quality.

Features

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  Forged piston construction for enhanced durability

  
  


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  Designed to optimise heat transfer from combustion chamber

  
  


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  Elliptical shape promotes even load distribution and reduced wear

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore size: 55.50 mm

  
  


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  Actual piston diameter: 55.44 mm

  
  


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  Display (cm³): 123

  
  


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  Stroke: 54.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Compression height: 29.50 mm

  
  


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  Wossner compression ratio: 2-stroke

  
  


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  OEM compression ratio: 2-stroke

  
  

Cross-Reference OEM Part Numbers

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  Wossner Piston Part Number: 8123D150

  
  


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  Lock Part Number: CW14

  
  


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  Pin Part Number: WP025

  
  


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  Ring Set Part Number: RSB5550 x2

  
  


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  Alternate Part Number: 56-W519+150.WO

  
  

Vehicle Fitments

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  Suzuki RM125 1985

  
  


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  Suzuki RM125 1986