The Wossner K8697DA-2 piston kit is a standard-size forged piston set designed for Kawasaki EX650 Ninja models from 2006 to 2011. With an 83.00mm bore and 12.6:1 compression ratio, this 2-ring piston configuration offers high efficiency, structural integrity, and performance for modern four-stroke engines. Manufactured in Germany, the kit includes two pistons and all required components for installation.

Features

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  Forged high-performance pistons with skirt coating

  
  


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  Elliptical design ensures uniform load distribution and controlled heat expansion

  
  


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  Optimised combustion chamber heat transfer to cylinder walls

  
  


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  Two-ring piston configuration

  
  


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  Includes piston pins, clips, and rings

  
  

Specifications

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  Bore size: 83.00mm (Standard)

  
  


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  Measured bore: 82.95mm

  
  


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  Display displacement: 649 cm³

  
  


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  Stroke: 60.00mm

  
  


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  Clearance: 0.05mm

  
  


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  Compression ratio: 12.6:1

  
  


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  OEM compression ratio: 12.7:1

  
  


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  Dome volume: –9.30 cm³

  
  


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  Compression height: 22.70mm

  
  


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  Quantity: 2 pistons per kit

  
  


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  Made in Germany

  
  

Cross-Reference OEM Part Numbers

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  Part No. 56-W9873.83.000.WO

  
  


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  Clip: CW19

  
  


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  Piston Pin: WP028

  
  


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  Ring Set: 830XSY

  
  

Vehicle Fitments

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  Kawasaki EX650 Ninja 2006–2011