Yamaha Yz 450 F 2024. It’s the lightest of the japanese 450s. Featuring a reversed cylinder head layout, forged aluminum piston, 39 mm titanium valves, lightened crank assembly and dry sump lubrication, the 2025 yz450f's advanced dohc four.

Featuring a reversed cylinder head layout, forged aluminum piston, 39 mm titanium valves, lightened crank assembly and dry sump lubrication, the 2024 yz450f’s advanced dohc four. Dyno testing yamaha’s 450 motocross bike for horsepower and torque.