The Wossner K8830DA-4 piston kit is a standard-size forged piston set designed for Yamaha YZF R6 models from 2006 to 2011. With a 67.00mm bore and a 13.0:1 compression ratio, this high-performance kit supports efficient combustion and durability in high-revving four-stroke engines. Manufactured in Germany, it includes four pistons and all essential components for installation.

Features

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  Forged high-performance pistons with skirt coating

  
  


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  Elliptical design promotes even thermal expansion and consistent load distribution

  
  


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  Optimised heat transfer from combustion chamber to cylinder walls

  
  


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  Designed for high-compression four-stroke engines

  
  


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  Includes piston pins, clips, and rings

  
  

Specifications

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  Bore size: 67.00mm (Standard)

  
  


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  Measured bore: 66.94mm

  
  


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  Display displacement: 599 / 617 / 635 cm³

  
  


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  Stroke: 42.50mm

  
  


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  Clearance: 0.06mm

  
  


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  Compression ratio: 13.0:1

  
  


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  Dome volume: –2.00 cm³

  
  


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  Compression height: 21.20mm

  
  


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  Quantity: 4 pistons per kit

  
  


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  Made in Germany

  
  

Cross-Reference OEM Part Numbers

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  Part No. 56-W9874.000.WO

  
  


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  Clip: CW15

  
  


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  Piston Pin: WP011

  
  


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  Ring Set: 670XKS

  
  

Vehicle Fitments

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  Yamaha YZF R6 2006–2011