This Wossner forged piston kit with a 73.50mm nominal bore (actual 73.44mm) is designed for the Bultaco TS250 from 1970. Engineered for two-stroke performance, the piston ensures optimal heat transfer, minimised friction, and long-term durability in demanding conditions.

Features

• 
  

  Forged construction for maximum strength and reliability

  
  


• 
  

  Elliptical piston profile enhances heat distribution and reduces stress points

  
  


• 
  

  Manufactured to tight tolerances for consistent performance

  
  


• 
  

  Made in Germany with high-precision engineering

  
  

Specifications

• 
  

  Bore Size: 73.50mm (actual 73.44mm)

  
  


• 
  

  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