This Wossner piston kit is designed for Harley Davidson 1340 EVO engines with a 3 3/4" stock stroke, manufactured between 1984 and 1999. With a standard 3.798" bore and flat top piston configuration, it offers a 9.5:1 compression ratio, delivering reliable performance through forged construction and advanced heat management.

Features

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

  
  


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  Designed for efficient combustion chamber heat transfer to cylinder walls

  
  


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  Elliptical piston geometry promotes even pressure distribution under heat expansion

  
  


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  Flat top piston design provides a 9.5:1 compression ratio

  
  


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  Manufactured in Germany

  
  


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  Includes rings, clips, and pins

  
  

Specifications

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  Bore size: 3.798" (standard)

  
  


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  Compression ratio: 9.5:1

  
  


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  Stroke: Stock (3 3/4")

  
  


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  Piston type: Forged, skirt-coated, flat top

  
  


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  Quantity: 2 pistons per kit

  
  


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  Wossner Part Number: K8533DA-2

  
  

Vehicle Fitments

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  Harley Davidson 1340 EVO 3 3/4 Stock Stroke, years 1984–1999