This Wossner piston kit with a 45.03mm bore (+0.03mm oversize, actual size 44.99mm) is precision-engineered for KTM SX65 models from 2000 to 2008. Forged in Germany, it is designed for durability, optimal thermal efficiency, and consistent performance in demanding two-stroke environments.

Features

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  Forged piston design for superior strength and extended lifespan

  
  


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  Engineered to ensure efficient combustion chamber heat transfer to cylinder walls

  
  


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  Elliptical shape promotes even load distribution and reduces stress-induced piston collapse

  
  


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  German-manufactured for high-quality fit and function

  
  

Specifications

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  Bore size: 45.03 mm

  
  


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  Actual piston size: 44.99 mm

  
  


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  Display (cm³): 63

  
  


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  Stroke (mm): 40.00

  
  


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  Clearance (mm): 0.05

  
  


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  Compression ratio: 2-stroke (Wossner and OEM)

  
  


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  Compression height (mm): 21.70

  
  

Vehicle Fitments

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  2000 KTM SX65

  
  


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  2001 KTM SX65

  
  


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  2002 KTM SX65

  
  


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  2003 KTM SX65

  
  


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  2004 KTM SX65

  
  


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  2005 KTM SX65

  
  


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  2006 KTM SX65

  
  


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  2007 KTM SX65

  
  


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  2008 KTM SX65

  
  

Included Components

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  Piston: Wossner PN# 8198DD

  
  


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  Lock: PN# CW12

  
  


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  Pin: PN# WP091

  
  


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  Ring Set: PN# RSB4500

  
  


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  Rod: PN# P2002