This Wossner forged piston kit features a 73.00mm nominal bore (actual 72.94mm) and is engineered for the Bultaco TS250 from 1970. Designed for durability and efficiency in two-stroke applications, it ensures optimal combustion chamber dynamics and long service life under performance conditions.

Features

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  Forged aluminium piston for high strength and durability

  
  


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  Elliptical shape improves heat distribution and minimises localised stress

  
  


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  Precision-machined for efficient combustion and reduced risk of piston collapse

  
  


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  Manufactured in Germany with strict quality controls

  
  

Specifications

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  Bore Size: 73.00mm (actual 72.94mm)

  
  


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  Stroke: 60.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Wossner Compression Ratio: 2 stroke

  
  


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  OEM Compression Ratio: 2 stroke

  
  


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  Compression Height: 29.00 mm

  
  


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  Lock Part Number: CW16

  
  


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  Pin Part Number: WP027

  
  


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  Ring Set Part Number: RSB7300

  
  

Vehicle Fitments

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  Bultaco TS250 1970