PISTON KIT HARLEY 3.534 SET/2, WOSSNER K8542D090-2 DAVIDSON, ROAD

This Wossner piston kit is designed for Harley Davidson 1340 EVO Big Twin engines (80 cu. in.) with a 4.250" stroke, produced from 1984 to 1999. Featuring a 3.534" bore oversized by +0.032", the kit includes domed pistons delivering a 9.5:1 compression ratio for improved performance and thermal efficiency.

Features

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  Forged high-performance pistons (2 pcs), skirt-coated for reduced friction and extended service life

  
  


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  Engineered for optimal combustion chamber heat transfer to cylinder walls

  
  


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  Elliptical design ensures even load distribution and prevents piston collapse during thermal expansion

  
  


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  Domed piston configuration supports 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: 3.534" (+0.032" oversize)

  
  


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  Compression ratio: 9.5:1

  
  


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  Stroke: 4.250"

  
  


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  Piston type: Forged, skirt-coated, domed

  
  


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  Quantity: 2 pistons per kit

  
  


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  Wossner Part Number: K8542D090-2

  
  


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  Alternate Part No: 56-W9957.090.WO

  
  

Vehicle Fitments

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  Harley Davidson 1340 EVO Big Twin (80 cu. in.), stroke 4.250, years 1984–1999