2023 Suzuki RM-Z250 Dyno Test

How much power does Suzuki’s 250 four-stroke motocross bike make in 2023?

Suzuki has increased its presence in the 250SX divisions of the 2023 Monster Energy AMA Supercross series with two teams fielding riders on RM-Z250s. In the 250SX West Region Championship, there’s Progressive Insurance Ecstar Suzuki’s Dilan Schwartz and the BarX Suzuki trio of Derek Drake, Robbie Wageman, and Ty Masterpool; make that four on BarX Suzuki when Carson Mumford returns from injury. Marshal Weltin will fly the Progressive Insurance Ecstar Suzuki flag in the 250SX East Region Championship when it gets underway in early February.

Seeing more yellow bikes on the track showing what they’re capable of is great. Although the RM-Z250 hasn’t changed since 2019 and lacks some features of others in the class such as electric start and a handlebar-mounted EFI map switch, it retains a user-friendly powerband, top-notch suspension components, and agreeable ergonomics.

After penning our first ride review, we ran Suzuki’s 250 four-stroke motocross bike on our in-house dyno. With a Dunlop D404 street tire on the rear wheel, it produced 36.7 hp at 12,300 rpm and 18.3 lb.-ft. of torque at 9,100 rpm. The yellow machine won’t be included in our upcoming 2023 250 Four-Stroke Motocross Shootout, but test rider Evan Allen will be writing other stories about it, so stay tuned to dirtrider.com for more.

2023 Suzuki RM-Z250 Dyno Chart.Robert Martin Jr.

2023 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 w/ 44mm throttle body