PISTON KIT 97-01 CR250 68.50, 1-RING WOSSNER 8161D210

Wossner forged piston kit 8161D210 is a +2.10 oversize option for Honda CR250R models from 1997 to 2001 with a 1-ring configuration. It features a 68.50 mm bore and 68.44 mm actual piston diameter. Designed and manufactured in Germany, it incorporates Wossner’s elliptical geometry to ensure even pressure distribution and efficient thermal management in high-performance 2-stroke engines.

Features

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  Forged piston for enhanced strength and wear resistance

  
  


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  Elliptical design promotes uniform load distribution and reduces localised stress

  
  


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  Superior heat transfer properties for efficient combustion chamber cooling

  
  


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  Made in Germany with high precision

  
  

Specifications

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  Bore Size: 68.50 mm

  
  


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  Actual Piston Diameter: 68.44 mm

  
  


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  Display (Displacement): 290 cm³

  
  


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  Stroke: 72.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Compression Ratio: 2-stroke (Wossner and OEM)

  
  


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  Compression Height: 38.00 mm

  
  

Cross-Reference Component Part Numbers

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  Piston Kit: 8161D210

  
  


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  Lock: CW18

  
  


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  Pin: WP033

  
  


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  Ring Set: RSB6850

  
  


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  Rod: P2021

  
  

Vehicle Fitments

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  1997 Honda CR250R (1-ring)

  
  


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  1998 Honda CR250R (1-ring)

  
  


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  1999 Honda CR250R (1-ring)

  
  


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  2000 Honda CR250R (1-ring)

  
  


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  2001 Honda CR250R (1-ring)