Wossner Forged Piston Kit 67.00mm Bore – Honda CR250R (1986–1996)
This Wossner forged piston kit is engineered for Honda CR250R models from 1986 to 1996, with a bore size of 67.00 mm and a piston diameter of 66.94 mm (+0.60 mm oversize). Ideal for use in significantly overbored cylinders, this forged piston provides high structural integrity and optimised thermal conductivity. The elliptical design distributes stress evenly across the piston surface, reducing wear and the risk of failure. Manufactured in Germany to meet high precision standards.

Features

• Forged construction for maximum strength and durability

• Superior thermal conductivity facilitates efficient heat transfer to cylinder walls

• Elliptical profile ensures even pressure distribution, minimising wear and deformation

• Precision-engineered in Germany for consistent performance

Specifications

• Bore Size: 67.00 mm

• Piston Diameter: 66.94 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: 8021D060

• Lock: CW18

• Pin: WP033

• Ring Set: RSB6700 x 2

• Rod: P2021

Vehicle Fitments

• 1986 Honda CR250R

• 1987 Honda CR250R

• 1988 Honda CR250R

• 1989 Honda CR250R

• 1990 Honda CR250R

• 1991 Honda CR250R

• 1992 Honda CR250R

• 1993 Honda CR250R

• 1994 Honda CR250R

• 1995 Honda CR250R

• 1996 Honda CR250R