2021 Suzuki RM-Z250 Dyno Test

How much power does Suzuki’s 250 four-stroke motocrosser make in 2021?

Video By: Alec Dare

Although the Suzuki RM-Z250 has not been given any mechanical changes since its latest revamp in 2019, the RM Army’s 250 four-stroke motocross model does feature some additional EFI tuning capability for 2021 with Suzuki’s new MX-Tuner 2.0. The RM-Z250 did not arrive in time to be included in Dirt Rider’s 2021 250F Motocross Shootout, but we recently took delivery of the bike and wasted no time in running it on our in-house dyno. With a Dunlop D404 street tire mounted on its rear wheel, the RM-Z250 churned out 36.3 hp at 11,500 rpm and 18.6 pound-feet of torque at 9,100 rpm.

2021 Suzuki RM-Z250 Dyno ChartRobert Martin

2021 Suzuki RM-Z250 Engine Specifications

Engine Type: DOHC, liquid-cooled, four-stroke single-cylinder; 4 valves/cyl.
Displacement: 249cc
Bore x Stroke: 77.0 x 53.6mm
Compression Ratio: 13.75:1
Fuel Delivery: Electronic fuel injection
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