Wossner forged piston kit designed for superior strength and performance. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany for high-quality standards.

Features

• Forged piston for enhanced strength and durability


• Optimized heat transfer for efficient combustion


• Elliptical design to prevent piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 69.50mm


• Actual Bore Diameter: 68.94mm


• Displacement: 246 cm³


• Stroke: 68.00mm


• Clearance: 0.06mm


• Wossner Compression Ratio: 2-Stroke


• OEM Compression Ratio: 2-Stroke


• Compression Height: 35.80mm


• Theoretical Weight: Not specified

Included Components

• Lock Part Number: CW18


• Pin Part Number: WP033


• Ring Set Part Number: RSB6950 x 2

Vehicle Fitments

• Yamaha IT 250 (1983)


• Yamaha Tri-Z 250 (1985-1989)