2020 Kawasaki KX450 Dyno Test

How much power does Kawasaki’s 450 motocross bike make in 2020?

Video By: Bert Beltran

The 2020 Kawasaki KX450 has a starting suggested retail price of $9,299 and is available in green. Powering this Japanese motorcycle is a liquid-cooled, DOHC, four-valve, 449cc four-stroke engine.

We ran the KX450 on our rear-wheel dyno to determine peak output from Kawasaki’s flagship motocross bike. We documented 51.9 hp at 9,200 rpm and 32.9 pound-feet of torque at 6,800 rpm.

2020 Kawasaki KX450 Dyno Chart
2020 Kawasaki KX450 Dyno ChartRobert Martin

“The KX450 engine is very reactive, and the throttle response is quick and snappy!” —Tanner Basso

  • Engine Specifications
  • Engine Type: Liquid-cooled, DOHC, four-stroke single-cylinder; 4 valves/cyl.
  • Bore x Stroke: 96.0 x 62.1mm
  • Displacement: 449cc
  • Compression Ratio: 12.5:1
  • Fuel Delivery: Electronic fuel injection