WOSSNER 101mm FORGED PISTON KIT A, KTM 620/625/640 LC4

Wossner forged piston kit with a 101mm bore, designed for KTM 620, 625, 640 LCA, SX, Duke, and Supermoto models. Engineered for optimal combustion chamber heat transfer and uniform bearing surface under heat expansion, reducing localized pressure and piston collapse. Manufactured in Germany for durability and precision.

Features

• Forged piston for superior strength and design
• Optimized heat transfer to cylinder walls
• Elliptical design for uniform bearing surface and even thrust load distribution
• Manufactured in Germany

Specifications

• Bore: 101mm
• Standard size piston (PN# 8524DA)
• Lock Part Number: CW22
• Pin Part Number: WP009
• Ring Set Part Number: 1010XSY
• Displacement: 600 cm³
• Stroke: 76.00mm
• Clearance: 0.06mm
• Wossner Compression Ratio: OEM
• OEM Compression Ratio: 11.70:1
• Dome Volume: +7.60 cm³
• Compression Height: 26.50mm

Cross-Reference OEM Part Numbers

• 7849M10100

Vehicle Fitments

• KTM 620 LC4 (1994-1997)
• KTM 620 Duke (1994-1997)
• KTM 620 SC (1998-2001)
• KTM 625 SXC (2002-2007)
• KTM 640 LC4 (1998-2007)
• KTM 660 SMC (2003-2009)

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.