2019 Yamaha YZ450FX Dyno Test

How much power does it make?

The 2019 Yamaha YZ450FX has a starting suggested retail price of $9,499 and is available in Team Yamaha Blue. Powering this Japanese motorcycle is a liquid-cooled, DOHC, four-valve, 449cc four-stroke engine.

We ran the YZ450FX on our rear-wheel dyno in third gear to determine peak output from it. We documented 53.24 hp at 9,430 rpm and 32.57 pound-feet of torque at 7,330 rpm.

2019 Yamaha YZ450FX Dyno ChartRobert Martin

“The Yamaha YZ450FX engine has tractor-like torque and likes to be shifted early.”

- Allan Brown

Engine Specifications

Engine Type: Liquid-cooled, DOHC, four-stroke single-cylinder; 4 valves/cyl.
Bore x Stroke: 97.0mm x 60.9mm
Displacement: 449cc
Compression Ratio: 12.8:1
Fuel Delivery: Electronic fuel injection