This Wossner forged piston kit features a 95.02mm bore size (94.97mm actual), offering a +0.02mm oversize fitment for KTM SX-F450 models from 2013 to 2018. Manufactured in Germany, the piston includes a two-ring configuration and an elliptical design to ensure even thrust load distribution during thermal expansion. It matches OEM compression specifications while enhancing durability and thermal efficiency.

Features

• 
  

  Forged piston with precision +0.02mm oversize specification

  
  


• 
  

  Elliptical design for uniform pressure distribution under heat expansion

  
  


• 
  

  Engineered for optimal combustion heat transfer to cylinder walls

  
  


• 
  

  Manufactured in Germany

  
  

Specifications

• 
  

  Bore Size: 95.02mm (actual 94.97mm)

  
  


• 
  

  Displacement: 449 cm³

  
  


• 
  

  Stroke: 60.80 mm

  
  


• 
  

  Clearance: 0.05 mm

  
  


• 
  

  Compression Ratio (Wossner): OEM

  
  


• 
  

  Compression Ratio (OEM): 12.60:1

  
  


• 
  

  Dome Volume: +1.00 cm³

  
  


• 
  

  Compression Height: 22.80 mm

  
  

Cross-Reference OEM Part Numbers

• 
  

  56-W956.C.WO

  
  

Vehicle Fitments

• 
  

  KTM SX-F450 (2013–2018)