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Wossner  |  SKU: 56-W9919.200.WO
New arrival

PISTON KIT MX YZ TY80 49.00, FORGED WOSSNER 8269D200

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£69.73

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Description

This Wossner piston kit features a 49.00mm bore with a measured diameter of 48.95mm, providing a +2.00mm oversize fitment. Designed for select Yamaha 80cc models from the 1970s and early 1980s, the kit delivers high-strength performance and precise thermal expansion control for reliable two-stroke engine operation.

Features

  • Forged construction ensures superior strength and durability

  • Engineered for efficient heat transfer from combustion chamber to cylinder walls

  • Elliptical design promotes uniform bearing surface during heat expansion

  • Distributes thrust loads evenly to prevent piston collapse

  • Manufactured in Germany

Specifications

  • Bore: 49.00mm

  • Diameter: 48.95mm

  • Stroke: 42.00 mm

  • Clearance: 0.05 mm

  • Compression Ratio (Wossner): 2-stroke

  • Compression Ratio (OEM): 2-stroke

  • Compression Height: 29.40 mm

  • Ring Type: Single Ring

  • Clips P/N: CW12

  • Pin P/N: WP091

  • Ring Set P/N: RSB4900

Cross-Reference OEM Part Numbers

  • Part No. 56-W9919.200.WO

  • Wossner Piston 8269D200

Vehicle Fitments

  • Yamaha MX80 1980–1982

  • Yamaha TY80 1974–1975

  • Yamaha YZ80 1974–1975

  • Yamaha GT1 1973–1975

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