Wossner Piston Kit 8188DC is a precision-forged piston engineered for Yamaha YZ80 models from 1993 to 2001 with a 47.02mm bore (+0.02 US Bore). Designed in Germany, it provides superior thermal and mechanical performance. Its elliptical profile ensures uniform surface contact under heat expansion, distributing loads evenly and reducing stress points, which helps prevent piston failure under demanding conditions.

Features

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  Forged construction enhances durability and structural strength

  
  


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  Elliptical design maintains consistent bearing surface during thermal expansion

  
  


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  Optimised heat transfer from combustion chamber to cylinder walls

  
  


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  German engineering and manufacturing

  
  

Specifications

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  Bore: 47.02 mm

  
  


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  Actual Piston Diameter: 46.97 mm

  
  


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  Stroke: 47.80 mm

  
  


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  Displacement: 82 cm³

  
  


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  Clearance: 0.05 mm

  
  


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  Compression Height: 26.00 mm

  
  


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  Wossner Compression Ratio: 2-stroke

  
  


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  OEM Compression Ratio: 2-stroke

  
  

Cross-Reference OEM Part Numbers

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  Wossner Piston: 8188DC

  
  


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  Lock: CW14

  
  


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  Pin: WP058

  
  


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  Ring Set: RSB4700

  
  


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  Rod: P2008

  
  


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  Internal Part No: 56-W646+00C.WO

  
  

Vehicle Fitments

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  1993 Yamaha YZ80

  
  


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  1994 Yamaha YZ80

  
  


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  1995 Yamaha YZ80

  
  


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  1996 Yamaha YZ80

  
  


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  1997 Yamaha YZ80

  
  


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  1998 Yamaha YZ80

  
  


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  1999 Yamaha YZ80

  
  


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  2000 Yamaha YZ80

  
  


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  2001 Yamaha YZ80