This Wossner forged piston kit is engineered for high-performance applications and fits Honda CRF150R Pro Series models from 2012 to 2018. With a precise 66.02mm bore size and a high-strength forged construction, this piston is designed for durability and efficient heat transfer under demanding conditions.

Features

• Forged piston construction for enhanced strength and durability

• Elliptical design ensures uniform bearing surface under heat expansion

• Optimised for superior heat dissipation from combustion chamber to cylinder walls

• Designed to prevent localised pressure and piston collapse

• Manufactured in Germany

Specifications

• Bore Size: 66.02mm

• Actual Piston Size: 65.97mm

• Display Displacement: 149 cm³

• Stroke: 43.80mm

• Piston Clearance: 0.05mm

• Wossner Compression Ratio: 12.20:1

• OEM Compression Ratio: 111.70:1

• Dome Volume: -0.80 cm³

• Compression Height: 20.60mm

• Lock Part Number: CW14

• Pin Part Number: WP058

• Ring Set Part Number: 660XKS

Cross-Reference OEM Part Numbers

• Part No: 56-W921.C.WO

Vehicle Fitments

• Honda CRF150R (2012–2018), Pro Series