Wossner forged piston kit with a 100.02mm bore and 99.97mm diameter, designed for KTM EXC530R models. This high-compression piston (12.50:1) enhances performance and durability. Manufactured in Germany, it ensures optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.

Features

• Forged construction for superior strength


• High-compression ratio for increased performance


• Optimized heat transfer for efficient combustion


• Elliptical design for uniform load distribution


• Manufactured in Germany

Specifications

• Bore: 100.02mm


• Diameter: 99.97mm


• Display (cm³): 510


• Stroke (mm): 72.00


• Clearance (mm): 0.04


• Wossner Compression Ratio: 12.50:1


• OEM Compression Ratio: 11.90:1


• Dome Volume (cm³): -2.80


• Compression Height (mm): 24.40

Cross-Reference OEM Part Numbers

• Wossner Piston KTM EXC530R (PN# 8706DC)


• Lock P/N: CW19


• Pin P/N: WP037


• Ring Set P/N: 950ADS-2


• OEM References: PROX 01.6528, WOSSNER 8706

Vehicle Fitments

• KTM EXC530R (2008-2011)