Wossner high-compression forged pistons are built for durability and thermal efficiency, offering enhanced heat transfer from the combustion chamber to the cylinder walls. Their elliptical shape ensures uniform load distribution during expansion, preventing piston collapse under pressure. This model, with a 97.01mm bore (96.97mm actual size), is specifically designed for Yamaha YZ450F applications and manufactured in Germany.

Features

• Forged for increased strength and reliability


• Elliptical design supports uniform thermal expansion


• High-compression configuration for performance applications


• Made in Germany

Specifications

• Bore Size: 97.01mm (actual 96.97mm)


• Displacement: 449 cm³


• Stroke: 60.80mm


• Clearance: 0.04mm


• Wossner Compression Ratio: 13.50:1


• OEM Compression Ratio: 12.50:1


• Dome Volume: -2.10 cm³


• Compression Height: 24.00mm

Vehicle Fitments

• Yamaha YZ450F 2014–2015