PISTON KIT 87-89 KX250 69.50, WOSSNER 8129D210 KAWASAKI MX

This Wossner 69.50mm (+2.10 oversize) forged piston kit is designed for Kawasaki KX250 models from 1987 to 1989. Built for durability and performance in two-stroke engines, it features a forged construction and elliptical design to enhance thermal expansion behaviour and thrust load distribution. Manufactured in Germany, this piston supports efficient heat transfer from the combustion chamber to the cylinder walls, ensuring long-lasting engine operation under high-stress conditions.

Features

• Forged piston construction for improved strength and durability

• Elliptical design provides uniform bearing surface during thermal expansion

• Even distribution of thrust loads helps prevent piston collapse and localised stress

• Engineered for efficient combustion heat transfer to cylinder walls

• Manufactured in Germany

Specifications

• Bore: 69.50mm

• Actual diameter: 69.44mm

• Displacement: 249 cm³

• Stroke: 70.00mm

• Clearance: 0.06mm

• Compression height: 37.00mm

• Compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

• Piston Kit Part No.: 56-W556+210.WO

• Wossner Piston Kit No.: 8129D210

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6950 x 2

Vehicle Fitments

• Kawasaki KX250 1987

• Kawasaki KX250 1988

• Kawasaki KX250 1989