This Wossner forged piston kit has a 65.00mm bore (actual 64.94mm) and serves as a +1.50mm oversize replacement for KTM 175 GS and MC models from 1977 to 1982. Engineered specifically for two-stroke engines, it features a high-strength design that promotes effective heat transfer and structural durability. The elliptical profile ensures uniform pressure distribution, minimising the risk of piston collapse during operation.

Features

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  Forged construction ensures superior durability and thermal conductivity

  
  


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  Elliptical shape for even thrust load distribution under expansion

  
  


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  Designed for high-performance two-stroke applications

  
  

Specifications

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  Bore Size: 65.00mm (actual 64.94mm)

  
  


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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: RSB6500

  
  

Cross-Reference OEM Part Numbers

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  56-W967.150.WO

  
  

Vehicle Fitments

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  KTM 175 GS (1977–1982)

  
  


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  KTM 175 MC (1977–1982)