This Wossner forged piston kit with a 3.758" bore is an oversized (+0.25mm / +0.010") replacement for Harley-Davidson 1453cc Twin Cam engines from 1999 to 2009, including Twin Cam 88 (88 cu. in.) models from 1999 to 2006. Forged in Germany for high durability and performance, the pistons feature a flat top design with an 8.5:1 compression ratio. The kit includes two skirt-coated forged pistons, rings, clips, and pins.

Features

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  Forged construction for exceptional strength and longevity

  
  


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  Skirt-coated to reduce friction and wear

  
  


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  Engineered for efficient combustion chamber heat dissipation

  
  


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  Elliptical profile ensures even bearing surface during thermal expansion

  
  


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  Flat top piston with 8.5:1 compression ratio

  
  


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  Manufactured in Germany

  
  

Specifications

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  Bore: 3.758" (+0.25mm / +0.010" Oversize)

  
  


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  Compression ratio: 8.5:1 (flat top)

  
  


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  Includes: 2 forged pistons, rings, clips, and pins

  
  


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  Ring Set Part Number: 955XSY

  
  

Cross-Reference OEM Part Numbers

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  56-W9865.025.WO

  
  


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  K8594D025-2

  
  

Vehicle Fitments

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  Harley-Davidson 1453cc Twin Cam (1999–2009)

  
  


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  Harley-Davidson Twin Cam 88 (1999–2006)