WOSSNER 58mm PISTON KIT YAMAHA YZ125 1984

This Wossner forged piston kit with a 58mm bore (57.94mm) is engineered for the 1984 Yamaha YZ125. Manufactured in Germany, it offers high strength and thermal efficiency. The elliptical piston profile ensures consistent bearing surface during expansion, which helps to evenly distribute thrust loads and reduce the risk of piston failure.

Features

• Forged piston construction for maximum strength

• Optimised for effective combustion heat transfer to cylinder walls

• Elliptical design supports even expansion and pressure distribution

• Manufactured in Germany

Specifications

• Bore size: 58mm (57.94mm)

• Display volume: 123 cm³

• Stroke: 50.00 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: 8120D200

• Lock: CW16

• Pin: WP036

• Ring Set: RSB5800

Vehicle Fitments

• Yamaha YZ125 1984