This Wossner forged piston kit features a 63.50mm bore size (63.95mm actual) and is a standard fitment for KTM 175 GS and MC models from 1977 to 1982. Manufactured in Germany, the piston is designed for two-stroke engines, providing enhanced durability and thermal efficiency. Its elliptical profile ensures even load distribution, reducing the risk of piston collapse under expansion.

Features

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  Forged piston designed for two-stroke performance applications

  
  


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  Elliptical shape ensures even thrust load distribution under thermal stress

  
  


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  Engineered for efficient heat transfer from combustion chamber to cylinder walls

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore Size: 63.50mm (actual 63.95mm)

  
  


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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 (as listed)

  
  


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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: RSB6350

  
  

Cross-Reference OEM Part Numbers

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  56-W967.00A.WO

  
  

Vehicle Fitments

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  KTM 175 GS (1977–1982)

  
  


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  KTM 175 MC (1977–1982)