WOSSNER 66.4mm PISTON KIT C, HONDA CR250 1986-1996

Wossner Forged Piston Kit 66.42mm Bore – Honda CR250R (1986–1996)
This Wossner forged piston kit is designed for Honda CR250R models produced from 1986 to 1996. With a bore size of 66.42 mm and a piston diameter of 66.36 mm (+0.02 mm oversize), it is intended for cylinders that require a minimal oversize to restore proper clearance. The piston’s forged construction enhances strength, while the elliptical design ensures uniform load distribution under heat expansion. Made in Germany for maximum precision and reliability.

Features

• Forged piston ensures high strength and resistance to deformation

• Superior thermal conductivity for efficient combustion heat transfer

• Elliptical design distributes pressure evenly and minimises localised wear

• Manufactured in Germany to high precision standards

Specifications

• Bore Size: 66.42 mm

• Piston Diameter: 66.36 mm

• Engine Displacement: 249 cm³

• Stroke: 72.00 mm

• Clearance: 0.06 mm

• Compression Height: 38.00 mm

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

Cross-Reference Wossner Part Numbers

• Piston Kit: 8021DC

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6640 x 2

Vehicle Fitments

• 1986–1996 Honda CR250

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.