PISTON KIT 05 YZF/WR450F 95 HC, WOSSNER 8647DA, 5TJ-11631-00-00

Wossner forged piston kit designed for high compression and performance. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to high-quality standards.

Features

• High-compression forged piston for enhanced performance
• Optimized heat transfer for efficient combustion
• Elliptical design to prevent piston collapse
• Manufactured in Germany

Specifications

• Bore Size: 95.00mm
• Actual Bore Diameter: 94.95mm
• Displacement: 449 cm³
• Stroke: 63.40mm
• Clearance: 0.05mm
• Wossner Compression Ratio: 13.50:1
• OEM Compression Ratio: 12.30:1
• Dome Volume: -6.30 cm³
• Compression Height: 23.50mm
• Theoretical Weight: Not specified

Included Components

• Lock Part Number: CW18
• Pin Part Number: WP053
• Ring Set Part Number: 950ADS-2
• Rod Part Number: P4007

Cross-Reference OEM Part Numbers

• 5TJ-11631-00-00

Vehicle Fitments

• Yamaha YZ450F (2005)
• Yamaha WR450F (2005)