Wossner forged piston kit designed for Husqvarna CR250, WR250, and XR250 (1974-1984) models. Engineered for superior strength and optimal heat transfer, these pistons feature an elliptical design to ensure uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany.

Features

• Forged piston for increased strength and durability


• Optimized heat transfer for efficient combustion chamber performance


• Elliptical design for even thrust load distribution and reduced piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 69.50mm


• Actual Bore Diameter: 69.44mm


• Displacement: 249 cm³


• Stroke: 65.80mm


• Clearance: 0.06mm


• Wossner Compression Ratio: 2-stroke


• OEM Compression Ratio: 2-stroke


• Compression Height: 32.00mm


• Lock Part Number: CW18


• Pin Part Number: WP033


• Ring Set Part Number: RSB6950

Cross-Reference OEM Part Numbers

• 137M06950

Vehicle Fitments

• Husqvarna CR250 (1974-1984)


• Husqvarna WR250 (1974-1984)


• Husqvarna XR250 (1974-1984)