The Wossner 80mm Bore Piston Kit (Part No. 8644D200) is a high-performance forged piston designed for the Kawasaki KLX300R. Engineered for durability and efficient heat transfer, it features an elliptical design that ensures even load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston maintains the OEM compression ratio for reliable engine performance.

Features

• High-strength forged piston construction


• Optimized heat transfer for improved combustion efficiency


• Elliptical design for even thrust load distribution


• Manufactured in Germany

Specifications

• Bore Size: 80mm


• Actual Bore Diameter: 79.94mm


• Compression Ratio: OEM


• OEM Compression Ratio: 11.0:1


• Displacement: 290cc


• Stroke: 61.20mm


• Clearance: 0.06mm


• Dome Volume: -4.80cm³


• Compression Height: 23.00mm

Cross-Reference OEM Part Numbers

• Lock P/N: CW17


• Pin P/N: WP090


• Ring Set P/N: 780XDS

Vehicle Fitments

• Kawasaki KLX300R (1997-2006)