PISTON KIT 84-85 CR250 69.50, WOSSNER 8156D350 HONDA MX

This Wossner piston kit is designed for Honda CR250R and ATAC250 models from 1984 to 1985, featuring a 69.50 mm bore and an actual piston diameter of 69.44 mm. Forged in Germany, this piston offers high strength and efficient heat transfer from the combustion chamber to the cylinder walls. Its elliptical design promotes a uniform bearing surface during thermal expansion, helping to distribute thrust loads evenly and reduce localised stress to prevent piston collapse.

Features

• Forged piston for enhanced durability

• Engineered for efficient thermal transfer

• Elliptical profile ensures even load distribution

• Manufactured in Germany

Specifications

• Bore size: 69.50 mm

• Actual piston diameter: 69.44 mm

• Display (cm³): 246

• Stroke: 72.00 mm

• Clearance: 0.06 mm

• Compression height: 38.00 mm

• Wossner compression ratio: 2-stroke

• OEM compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

• Wossner Piston Part Number: 8156D350

• Lock Part Number: CW18

• Pin Part Number: WP033

• Ring Set Part Number: RSB6950 x2

• Alternate Part Number: 56-W526_P14.WO

Vehicle Fitments

• Honda CR250R 1984

• Honda CR250R 1985

• Honda ATAC250 1984

• Honda ATAC250 1985

• Honda ATC250R 1985

• Honda ATC250R 1986

• Honda TRX250R 1985

• Honda TRX250R 1986