This Wossner piston kit with an 87mm bore is an oversized (+3mm) high-compression flat top replacement for Kawasaki ZX14 models from 2006 to 2009, including Pro Series variants. Manufactured in Germany, these forged pistons are built to withstand high-performance demands, offering excellent thermal management and structural stability. The elliptical profile allows for even pressure distribution, minimising localised stress and preventing piston collapse under heat and load.

Features

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  Forged construction for maximum strength and endurance

  
  


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  Designed for optimal combustion chamber heat dissipation

  
  


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  Elliptical shape ensures uniform bearing surface during thermal expansion

  
  


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  Even thrust load distribution reduces localised pressure points

  
  


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  High-compression flat top design

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore: 87mm (+3.00mm Oversize)

  
  


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  Actual bore: 86.93mm

  
  


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  Display volume: 1352 cm³

  
  


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  Stroke: 61.00mm

  
  


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  Clearance: 0.07mm

  
  


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  Wossner compression ratio: 13.50:1

  
  


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  OEM compression ratio: 12.00:1

  
  


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  Dome volume: -2.40 cm³

  
  


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  Compression height: 24.50mm

  
  

Cross-Reference OEM Part Numbers

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  56-W9816.87.WO

  
  


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  K8785D300-4

  
  

Vehicle Fitments

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  Kawasaki ZX14 (2006–2009) (Pro Series)