PISTON KIT 1983 &85 YZ125 58mm, WOSSNER 8119D200 YAMAHA

This Wossner forged piston kit features a 58mm bore (57.94mm) and is designed for Yamaha YZ125 models from 1983 and 1985. Made in Germany, this piston offers enhanced durability and efficient heat transfer. Its elliptical design promotes even pressure distribution under thermal expansion, reducing localized stress and helping prevent piston collapse.

Features

• Forged piston construction for improved strength

• Optimized for efficient heat transfer to cylinder walls

• Elliptical design ensures uniform bearing surface during expansion

• Manufactured in Germany

Specifications

• Bore size: 58mm (57.94mm)

• 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: 8119D200

• Lock: CW16

• Pin: WP036

• Ring Set: RSB5800

Vehicle Fitments

• Yamaha YZ125 1983

• Yamaha YZ125 1985