Wossner Piston Kit 8188D200 is a forged performance piston designed for Yamaha YZ80 models from 1993 to 2001, featuring a 49.00mm bore (+2.00 US Bore). This German-manufactured piston offers excellent thermal management and mechanical reliability. Its elliptical profile provides a consistent and uniform bearing surface during thermal expansion, minimising high-stress zones and reducing the risk of piston collapse during intense use.

Features

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  Forged construction delivers high durability and strength under extreme load

  
  


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  Elliptical design reduces localised pressure and distributes thrust evenly

  
  


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  Enhanced heat dissipation from combustion chamber to cylinder walls

  
  


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  Precision engineering and manufacturing in Germany

  
  

Specifications

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  Bore: 49.00 mm

  
  


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  Actual Piston Diameter: 48.95 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: 8188D200

  
  


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  Lock: CW14

  
  


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  Pin: WP058

  
  


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  Ring Set: RSB4900

  
  


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  Rod: P2008

  
  


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  Internal Part No: 56-W646+200.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