This Wossner forged piston kit with a 49.50mm bore (48.95mm) is designed for the 1984 Yamaha YZ80. Precision-manufactured in Germany, the piston enhances engine performance through superior heat transfer and an elliptical design that supports even load distribution under thermal stress, helping to prevent piston collapse.

Features

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  Forged piston design for high structural integrity

  
  


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  Engineered for efficient combustion heat transfer to cylinder walls

  
  


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  Elliptical profile reduces localized pressure and ensures uniform expansion

  
  


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  Made in Germany

  
  

Specifications

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  Bore size: 49.50mm (48.95mm)

  
  


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  Display volume: 82 cm³

  
  


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  Stroke: 84.00 mm

  
  


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  Clearance: 0.06 mm

  
  


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  Compression height: 30.80 mm

  
  


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  Theoretical weight: Not specified

  
  


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  Compression ratio: 2-stroke (Wossner and OEM)

  
  

Cross-Reference OEM Part Numbers

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  Piston: 8214D150

  
  


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  Lock: CW12

  
  


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  Pin: WP091

  
  


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  Ring Set: RSB4950

  
  

Vehicle Fitments

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  Yamaha YZ80 1984