This Wossner forged piston kit features a 64.00mm bore size (63.94mm actual) and is an oversize replacement (+0.50mm) for KTM 175 GS and MC models produced from 1977 to 1982. Designed for two-stroke engines, it ensures optimal performance and durability through superior heat dissipation and structural integrity. The piston’s elliptical profile supports even thrust load distribution, minimising the risk of deformation under heat expansion.

Features

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  Forged construction for strength and durability in two-stroke engines

  
  


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  Elliptical design distributes thrust loads evenly during thermal expansion

  
  


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  Optimised for effective heat transfer from combustion chamber to cylinder

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 64.00mm (actual 63.94mm)

  
  


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  Stroke: 54.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Compression Ratio (Wossner): 2-stroke

  
  


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  Compression Ratio (OEM): 12-stroke

  
  


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  Compression Height: 37.00 mm

  
  


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  Lock Part Number: CW15

  
  


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  Pin Part Number: WP011

  
  


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  Ring Set Part Number: RSB6400

  
  

Cross-Reference OEM Part Numbers

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  56-W967.050.WO

  
  

Vehicle Fitments

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  KTM 175 GS (1977–1982)

  
  


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  KTM 175 MC (1977–1982)