Wossner forged piston kit with a 95.01mm bore and 94.97mm size, designed for Yamaha YZ426F and WR426F models from 2000 to 2002. Engineered for superior strength and heat transfer, this piston features an elliptical design to ensure even bearing surface distribution, reducing localized pressure and preventing collapse. Manufactured in Germany.

Features

• Forged construction for enhanced strength and durability


• Optimized heat transfer for improved performance


• Elliptical design for uniform bearing surface distribution


• Designed to match OEM compression ratios

Specifications

• Bore Size: 95.01mm


• Actual Size: 94.97mm


• Displacement: 426cc


• Stroke: 60.10mm


• Piston Clearance: 0.04mm


• Compression Ratio: OEM (12.50:1)


• Dome Volume: -7.00cm³


• Compression Height: 24.10mm


• Piston Lock Part Number: CW19


• Piston Pin Part Number: WP037


• Ring Set Part Number: 950XDS

Cross-Reference OEM Part Numbers

• Wossner Part Number: 8525DB

Vehicle Fitments

• 2000-2002 Yamaha YZ426F


• 2000-2002 Yamaha WR426F