PISTON KIT YFZ450/R/X 98.00, WOSSNER 8601D300 FORGED KIT

The Wossner 8601D300 forged piston kit features a 98.00mm bore and is designed for Yamaha YFZ450 models from 2004 to 2005. Manufactured in Germany, this piston offers enhanced heat transfer and strength, with an elliptical shape that provides uniform bearing under expansion and prevents piston collapse under load.

Features

• Forged piston for high strength and durability
• Designed for optimal heat transfer to cylinder walls
• Elliptical design ensures even bearing surface during heat expansion
• Prevents localized pressure and piston collapse
• Manufactured in Germany

Specifications

• Bore: 98.00 mm
• Actual Bore Diameter: 97.95 mm
• Display: 449 cm³
• Hub Stroke: 62.00 mm
• Clearance: 0.05 mm
• Compression Height: 25.00 mm
• Dome Volume: -7.40 cm³
• Compression Ratio: OEM (11.90:1)
• Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

• Piston: 8601D300
• Lock: CW20
• Pin: WP038
• Ring Set: 980XSY
• Rod: P4029
• Part No.: 56-W4865+300.WO

Vehicle Fitments

• Yamaha YFZ450 2004–2005