The Wossner 8278D150 forged piston kit with a 51.00mm bore is designed for the 1983 Honda CR80R. Engineered in Germany, this piston provides enhanced durability, heat transfer, and structural integrity. Its elliptical profile ensures even thrust load distribution under thermal expansion, reducing the risk of localized pressure and piston failure.

Features

• Forged piston construction for improved strength and performance


• Optimized heat transfer from combustion chamber to cylinder walls


• Elliptical design distributes pressure evenly during heat expansion


• Minimizes risk of piston collapse under stress


• Manufactured in Germany

Specifications

• Bore: 51.00 mm


• Actual Bore Diameter: 50.95 mm


• Display: 79 cm³


• Hub Stroke: 41.40 mm


• Clearance: 0.05 mm


• Compression Height: 25.00 mm


• Dome Volume: Not specified


• Wossner Compression Ratio: 2-stroke


• OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

• Piston: 8278D150


• Lock: CW12


• Pin: WP091


• Ring Set: RSB5100 x 2


• Needle Bearing: N1004


• Part No.: 56-W493+150.WO

Vehicle Fitments

• Honda CR80R 1983