PISTON KIT 1983 &85 YZ125 57.5 WOSSNER 8119D150 YAMAHA

This Wossner forged piston kit features a 57.50mm bore (57.44mm) and is designed for Yamaha YZ125 models from 1983 and 1985. Manufactured in Germany, the piston provides enhanced strength and is engineered for effective heat transfer, even pressure distribution, and prevention of piston collapse under performance conditions.

Features

• Forged piston construction for increased strength

• Designed to optimize heat transfer from combustion chamber to cylinder walls

• Elliptical profile ensures uniform bearing surface under thermal expansion

• Manufactured in Germany

Specifications

• Bore size: 57.50mm (57.44mm)

• Display volume: 83 cm³

• Stroke: 84.00 mm

• Clearance: 0.06 mm

• Compression height: 30.80 mm

• Theoretical weight: Not specified

• Compression ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

• Piston: 8119D150

• Lock: CW16

• Pin: WP036

• Ring Set: RSB5750

Vehicle Fitments

• Yamaha YZ125 1983

• Yamaha YZ125 1985

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.