Wossner forged piston kit designed for Yamaha YZ250 (1976-1979), IT250 (1978-1980), TY250 (1974-1978), MC250 (1973-1975), and DT250 (1974-1979). 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: 70.00mm


• Actual Bore Diameter: 69.94mm


• Displacement: 246 cm³


• Stroke: 64.00mm


• Clearance: 0.06mm


• Wossner Compression Ratio: 2-stroke


• OEM Compression Ratio: 2-stroke


• Compression Height: 33.00mm


• Lock Part Number: CW18


• Pin Part Number: WP033


• Ring Set Part Number: RSB7000 x 2

Cross-Reference OEM Part Numbers

• 2K7-11637-01-00


• 234M07000

Vehicle Fitments

• Yamaha YZ250 (1976-1979)


• Yamaha IT250 (1978-1980)


• Yamaha TY250 (1974-1978)


• Yamaha MC250 (1973-1975)


• Yamaha DT250 (1974-1979)