PISTON KIT 85-86 RM125 54.50 WOSSNER 8123D050 SUZUKI MX

This Wossner forged piston kit features a 54.50mm bore with a +0.50 oversize specification and is intended for Suzuki RM125 models from 1985 to 1986. Manufactured in Germany, the piston is designed with an elliptical profile to provide a uniform bearing surface under thermal expansion. This reduces localised pressure and the risk of piston collapse while promoting efficient heat transfer from the combustion chamber to the cylinder walls.

Features

• Forged piston construction for high structural integrity

• Elliptical design promotes even load distribution during heat expansion

• Optimised heat transfer from combustion chamber to cylinder walls

• Made in Germany

• Includes piston, pin, locks, and ring set

Specifications

• Bore Size: 54.50mm

• Actual Bore: 54.44mm

• Stroke: 54.00mm

• Clearance: 0.06mm

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

• Compression Height: 29.50mm

• Displacement: 123 cm³

Cross-Reference OEM Part Numbers

• Piston Kit Part No: 56-W519+050.WO

• Wossner Piston PN: 8123D050

• Lock P/N: CW14

• Pin P/N: WP025

• Ring Set P/N: RSB5450 (x2)

Vehicle Fitments

• Suzuki RM125 (1985–1986)

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.