Wossner forged piston kit designed for superior strength and efficient heat transfer. The elliptical design ensures uniform bearing surface distribution under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for high performance and durability.

Features

• Forged piston for enhanced strength and reliability


• Optimized heat transfer to cylinder walls for efficient combustion


• Elliptical design prevents piston collapse and ensures uniform thrust load distribution


• Manufactured in Germany

Specifications

• Bore: 65.00mm (+5.00)


• Piston Size: 64.95mm


• Clearance: 0.05mm


• Compression Ratio: OEM


• OEM Compression Ratio: 10.00:1


• Compression Height: 24.00mm


• Dome Volume: +4.80cm³


• Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

• Lock: CW15


• Pin: WP011


• Ring Set: 650XKS

Vehicle Fitments

• Yamaha XT 125 (1982 - 1993)