PISTON KIT HARLEY 3.816 SET/2, WOSSNER K8620DA-2 DAVIDSON, ROAD

This Wossner piston kit is specifically engineered for Harley Davidson 1200 Big Bore engines with a 3.812" stroke, produced from 2004 to 2007. Featuring a standard 3.816" bore and reverse dome design with a 10.5:1 compression ratio, this kit is intended for use with aftermarket Big Bore cylinders and requires case boring for installation.

Features

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  Forged high-performance pistons (2 pcs), skirt-coated for friction reduction and durability

  
  


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  Precision-engineered for effective heat transfer from combustion chamber to cylinder walls

  
  


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  Elliptical design ensures uniform load distribution under thermal expansion

  
  


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  Reverse dome pistons deliver a 10.5:1 compression ratio

  
  


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  Manufactured in Germany

  
  


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  Includes rings, clips, and pins

  
  


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  Requires boring of engine cases and use of aftermarket Big Bore cylinders

  
  

Specifications

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  Bore size: 3.816" (standard size for Big Bore application)

  
  


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  Compression ratio: 10.5:1

  
  


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  Stroke: 3.812"

  
  


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  Piston type: Forged, skirt-coated, reverse dome

  
  


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  Quantity: 2 pistons per kit

  
  


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  Wossner Part Number: K8620DA-2

  
  


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  Alternate Part No: 56-W9956.000.WO

  
  

Vehicle Fitments

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  Harley Davidson 1200 Big Bore (3 13/16", 88 cu. in.), stroke 3.812, years 2004–2007