PISTON KIT 05-09 CR250 66.40 C, WOSSNER 8171DC HONDA MX

This Wossner piston kit is engineered for high-performance applications in the Honda CR250R models from 2005 to 2007. With a 66.42mm bore and 66.37mm specification, it features advanced forging and design principles for enhanced durability and heat dissipation, ensuring reliable performance under demanding two-stroke engine conditions.

Features

• Forged in Germany for superior strength and precision

• Elliptical design improves bearing surface uniformity under heat expansion

• Enhances heat transfer from the combustion chamber to cylinder walls

• Minimises localised pressure to prevent piston collapse

• Specifically designed for Honda CR250R engines

Specifications

• Bore: 66.42 mm

• Display (Displacement): 249 cm³

• Stroke: 72.00 mm

• Clearance: 0.06 mm

• Compression Ratio (Wossner & OEM): 2-stroke

• Compression Height: 38.00 mm

Cross-Reference OEM Part Numbers

• Piston Kit: 8171DC

• Lock: CW18

• Pin: WP033

• Ring Set: RDB6640

• Rod: P2020

• Internal Part No.: 56-W860+00C.WO

Vehicle Fitments

• 2005 Honda CR250R

• 2006 Honda CR250R

• 2007 Honda CR250R