PISTON KIT KTM 520 525 EXC SX WOSSNER 8637DA KTM 00-09 HC

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: 95.00mm
• Actual Bore Diameter: 94.95mm
• 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

Cross-Reference OEM Part Numbers

• 59030007000

Vehicle Fitments

• KTM EXC520 Pro Series (2000-2002)
• KTM SX520 Pro Series (2000-2002)
• KTM EXC525 Racing Pro Series (2003-2007)
• KTM SX525 Racing Pro Series (2003-2007)
• KTM EXC-G525 Racing Pro Series (2003-2006)
• KTM SM-R525 Pro Series (2004-2005)
• KTM EXC525 Factory Racing Pro Series (2007)
• Beta Motor RR525 (2005-2009)

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.