PISTON KIT 00-02 YZF426 97.00, FORGED WOSSNER 8525D200

Wossner forged piston kit with a 97mm bore (96.96mm actual) is designed for Yamaha YZ426F and WR426F models from 2000 to 2002. Engineered for superior strength and heat transfer efficiency, the piston features an elliptical design for even load distribution and reduced localized pressure. Manufactured in Germany, this high-performance component maintains OEM compression specifications.

Features

• Forged construction for enhanced strength and durability
• Optimized heat transfer to cylinder walls for improved performance
• Elliptical design ensures uniform bearing surface and prevents piston collapse
• Manufactured in Germany for high-quality standards

Specifications

• Bore Size: 97mm (96.96mm actual)
• Display (Displacement): 426 cm³
• Stroke: 60.10mm
• Clearance: 0.04mm
• Compression Ratio: OEM specification (12.50:1)
• Dome Volume: -7.00 cm³
• Compression Height: 24.10mm

Cross-Reference OEM Part Numbers

• Piston Kit: 8525D200
• Lock: CW19
• Pin: WP037
• Ring Set: 970XDS

Vehicle Fitments

• Yamaha YZ426F (2000-2002)
• Yamaha WR426F (2000-2002)