Wossner forged piston kit designed for durability and optimized heat transfer. Engineered with an elliptical shape for uniform bearing surface distribution, preventing piston collapse. Manufactured in Germany for high performance and reliability.

Features

• Forged construction for superior strength and longevity


• Optimized heat transfer for efficient combustion


• Elliptical design for even thrust load distribution


• Manufactured in Germany

Specifications

• Piston Size: 48.45mm


• Bore: 48.50mm


• Display: 79 cm³


• Stroke: 55.50mm


• Clearance: 0.05mm


• Compression Ratio: OEM (11.10:1)


• Dome Volume: -0.20 cm³


• Compression Height: 22.80mm


• Lock Part Number: CW12


• Pin Part Number: WP091


• Ring Set Part Number: RSB4850

Cross-Reference OEM Part Numbers

• Wossner 8185D150

Vehicle Fitments

• Yamaha YZ80 (1982-1983)