PISTON KIT 85-86 RM125 55.25, WOSSNER 8123D125 SUZUKI MX

This Wossner piston kit features a 55.25 mm bore size and is designed for high-performance compatibility with the Suzuki RM125 models from 1985 to 1986. Manufactured in Germany, the piston is forged for enhanced strength and reliability. It is engineered to optimise heat transfer from the combustion chamber to the cylinder walls and features an elliptical design that improves bearing surface uniformity under heat expansion. This design helps distribute thrust loads evenly and prevents localised pressure and piston collapse.

Features

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  Forged piston construction for increased durability

  
  


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  Designed for optimal combustion heat transfer

  
  


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  Elliptical shape ensures uniform bearing surface and load distribution

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore size: 55.25 mm

  
  


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  Actual piston diameter: 55.19 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: 8123D125

  
  


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  Lock Part Number: CW14

  
  


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  Pin Part Number: WP025

  
  


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  Ring Set Part Number: RSB5525 x2

  
  


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  Alternate Part Number: 56-W519+125.WO

  
  

Vehicle Fitments

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  Suzuki RM125 1985

  
  


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  Suzuki RM125 1986