2019 KTM 450 SX-F Dyno

How much power does it make?

The 2019 KTM 450 SX-F has a starting suggested retail price of $9,899 and is available in orange. Powering this Austrian motorcycle is a liquid-cooled, SOHC, four-valve, 449.9cc four-stroke engine.

We ran the 450 SX-F on our rear-wheel dyno in third gear to determine peak output from KTM’s flagship motocross bike. We documented 50.79 hp at 9,320 rpm and 32.55 pound-feet of torque at 6,800 rpm.

2019 KTM 450 SX-F
2019 KTM 450 SX-F Dyno ChartBert Beltran

“The KTM 450 SX-F engine has a very smooth power delivery that makes it deceivingly fast.”

- —Andrew Oldar

Engine Specifications

Engine Type: Liquid-cooled, SOHC, four-stroke single-cylinder; 4 valves/cylinder
Bore x Stroke: 95.0mm x 63.4mm
Displacement: 449.9cc
Compression Ratio: 12.75:1
Fuel Delivery: Electronic fuel injection