Wossner forged piston kit with a 100mm bore (99.95mm) for KTM SX-F 505 (2007-2008). Designed for superior strength and heat transfer efficiency, this piston ensures optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany.

Features

• High-compression forged piston for increased performance


• Optimized heat transfer for enhanced durability


• Elliptical design ensures uniform bearing surface under heat expansion


• Even thrust load distribution to prevent piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 100mm (99.95mm)


• Compression Ratio: 13.5:1


• Part Number: 8725DB


• Lock Part Number: CW20


• Pin Part Number: WP038


• Ring Set Part Number: 1000ADS-2


• Displacement: 449 cm³


• Stroke: 60.80mm


• Clearance: 0.05mm


• OEM Compression Ratio: 12.5:1


• Dome Volume: +0.30 cm³


• Compression Height: 21.80mm

Cross-Reference OEM Part Numbers

• 776300073000


• 4948M10000

Vehicle Fitments

• KTM SX-F 505 (2007-2008)