Wossner Forged Piston Kit 56.50mm Bore – Kawasaki KX125 1990 (8106D050 +0.50)
This Wossner forged piston kit is designed for the 1990 Kawasaki KX125, featuring a +0.50mm oversize bore (actual 56.44mm). Specifically engineered for high-performance 2-stroke engines, the forged construction ensures durability, strength, and superior heat dissipation. The piston’s elliptical shape promotes even thrust load distribution during thermal expansion, reducing the risk of localised stress and piston failure. Precision-made in Germany.

Features

• Forged piston construction for improved mechanical strength and wear resistance

• Optimised design for effective combustion heat transfer to the cylinder walls

• Elliptical profile reduces localised pressure and improves load distribution

• Built for 2-stroke engine applications

• Manufactured in Germany

Specifications

• Bore Size: 56.50mm (+0.50 oversize)

• Actual Bore: 56.44mm

• Compression Height: 29.50mm

• Clearance: 0.06mm

• Stroke: 50.60mm

• Displacement: 125 cm³

• Wossner Compression Ratio: 2-stroke

• OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

• Wossner Piston: 8106D050

• Ring Set: RSB5650

• Lock: CW16

• Pin: WP036

• Rod: P2033

• Internal Reference: 56-W589+00050.WO

Vehicle Fitments

• 1990 Kawasaki KX125