Wossner high-compression forged pistons are designed for maximum strength and efficient heat transfer, supporting high-performance engine demands. The elliptical piston shape allows even bearing surface expansion, reducing localized stress and minimizing the risk of collapse. This model features a 97.02mm bore (96.98mm actual size) and is manufactured in Germany for Yamaha YZ450F engines.

Features

• Forged construction for high strength


• Elliptical profile ensures uniform expansion and thrust distribution


• Designed for high-compression applications


• Made in Germany

Specifications

• Bore Size: 97.02mm (actual 96.98mm)


• 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