This Wossner forged piston kit with a 74.00mm nominal bore (actual 73.94mm) is designed for the Bultaco TS250 from 1970. Built for two-stroke applications, it delivers robust performance and long-term reliability, ideal for vintage engine rebuilds requiring precision fit and durability.

Features

• 
  

  Forged piston design offers increased strength and longevity

  
  


• 
  

  Engineered for efficient heat transfer and reduced thermal stress

  
  


• 
  

  Elliptical skirt profile minimises friction and prevents piston collapse

  
  


• 
  

  Manufactured in Germany with high-precision standards

  
  

Specifications

• 
  

  Bore Size: 74.00mm (actual 73.94mm)

  
  


• 
  

  Stroke: 60.00 mm

  
  


• 
  

  Clearance: 0.06 mm

  
  


• 
  

  Wossner Compression Ratio: 2 stroke

  
  


• 
  

  OEM Compression Ratio: 2 stroke

  
  


• 
  

  Compression Height: 29.00 mm

  
  


• 
  

  Lock Part Number: CW16

  
  


• 
  

  Pin Part Number: WP027

  
  


• 
  

  Ring Set Part Number: RSB7350

  
  

Vehicle Fitments

• 
  

  Bultaco TS250 1970