Wossner forged piston kit 8861DC is a +0.02mm oversized piston with a 66.02mm bore (measured at 65.97mm), designed specifically for Honda CRF150R models from 2012 to 2018. Featuring high-strength forged construction and a Teflon-coated skirt, this piston provides superior durability, thermal stability, and a precision fit ideal for competitive four-stroke applications.

Features

• 
  

  Forged construction for maximum durability and reliability

  
  


• 
  

  Elliptical design offers consistent load distribution under heat expansion

  
  


• 
  

  Excellent heat transfer from the combustion chamber to cylinder walls

  
  


• 
  

  Hard Teflon skirt coating for precise fit and bore conformity

  
  


• 
  

  Reduces localised pressure to protect against piston collapse

  
  


• 
  

  Made in Germany

  
  

Specifications

• 
  

  Bore: 66.02mm (Measured: 65.97mm)

  
  


• 
  

  Display Volume: 149 cm³

  
  


• 
  

  Stroke: 43.80mm

  
  


• 
  

  Clearance: 0.05mm

  
  


• 
  

  Compression Height: 20.60mm

  
  


• 
  

  Wossner Compression Ratio: OEM

  
  


• 
  

  OEM Compression Ratio: 11.70:1

  
  


• 
  

  Dome Volume: -1.40 cm³

  
  


• 
  

  Part No.: 56-W914.C.WO (Wossner 8861DC)

  
  


• 
  

  Ring Set: 660XKS

  
  


• 
  

  Lock P/N: CW14

  
  


• 
  

  Pin P/N: WP058

  
  

Vehicle Fitments

• 
  

  2012 Honda CRF150R

  
  


• 
  

  2013 Honda CRF150R

  
  


• 
  

  2014 Honda CRF150R

  
  


• 
  

  2015 Honda CRF150R

  
  


• 
  

  2016 Honda CRF150R

  
  


• 
  

  2017 Honda CRF150R

  
  


• 
  

  2018 Honda CRF150R