2020 Kawasaki KX450 Dyno Test

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

By Andrew Oldar
November 8, 2019

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.

“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

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