Wossner high-compression forged piston kit designed for KTM SX-EXC520 (2000-2002), SX-EXC525 Racing (2003-2007), and Beta Motor RR525 (2005-2009) models. Engineered for superior strength and optimal heat transfer, these pistons feature an elliptical design to ensure uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany.

Features

• High-compression forged piston for increased performance


• Optimized heat transfer for efficient combustion chamber performance


• Elliptical design for even thrust load distribution and reduced piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 95.01mm


• Actual Bore Diameter: 94.96mm


• Displacement: 510 cm³


• Stroke: 72.00mm


• Clearance: 0.05mm


• Wossner Compression Ratio: 12.50:1


• OEM Compression Ratio: 11.00:1


• Dome Volume: +4.60 cm³


• Compression Height: 23.50mm


• Lock Part Number: CW20


• Pin Part Number: WP029


• Ring Set Part Number: 950ADS-2

Vehicle Fitments

• KTM EXC520 (2000-2002)


• KTM SX520 (2000-2002)


• KTM EXC525 Racing (2003-2007)


• KTM SX525 Racing (2003-2007)


• Beta Motor RR525 (2005-2009)