The Wossner K8595D125-2 piston kit is a forged performance solution for Harley Davidson Twin Cam engines, featuring a +1.25mm oversize bore (3.797") and a domed design for increased compression. With a 10:1 compression ratio, this kit is built for high-performance applications requiring durability and efficient combustion. Manufactured in Germany, it includes all components necessary for proper installation.

Features

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  Forged high-performance pistons with skirt coating

  
  


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  Elliptical design ensures even load distribution and thermal expansion

  
  


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  Optimided heat transfer from combustion chamber to cylinder walls

  
  


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  Domed pistons with 10:1 compression ratio

  
  


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  Includes rings, clips, and pins

  
  

Specifications

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  Bore size: 3.797" (+0.049", +1.25mm)

  
  


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  Compression ratio: 10:1

  
  


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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-W9866.125.WO

  
  


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  Ring Set Part No. 965XSY

  
  

Vehicle Fitments

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  Harley Davidson 1453cc Twin Cam 1999–2009

  
  


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  Harley Davidson 1483cc Twin Cam 1999–2009

  
  


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  Twin Cam 88 (88 cu. in.) 1999–2006