PISTON KIT 05-09 CR250 68.50, WOSSNER 8171D210 HONDA MX

This Wossner piston kit is specifically designed for Honda CR250R models from 2005 to 2007, offering a 68.50mm bore with a 68.44mm specification for performance-oriented engine builds. Forged in Germany, it provides exceptional strength and heat dissipation, making it ideal for high-demand two-stroke applications.

Features

• German-forged piston for enhanced strength and longevity

• Optimised combustion chamber heat transfer to cylinder walls

• Elliptical piston shape ensures uniform bearing surface during thermal expansion

• Reduces localised pressure and distributes thrust loads evenly to prevent collapse

• Tailored for Honda CR250R two-stroke engines

Specifications

• Bore: 68.50 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: 8171D210

• Lock: CW18

• Pin: WP033

• Ring Set: RDB6850

• Rod: P2020

• Internal Part No.: 56-W860+210.WO

Vehicle Fitments

• 2005 Honda CR250R

• 2006 Honda CR250R

• 2007 Honda CR250R