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Kawasaki Z900 vs Yamaha XMAX 250

ESTIMATED SIMULATION

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The Kawasaki Z900 (2025) and the Yamaha XMAX 250 (2025) are compared with the same Moto Kıyas physics model under identical conditions: flat dry asphalt, no wind, a 75 kg rider and no passenger. The Kawasaki Z900 is a naked bike with 948 cc, 122.0 hp and 213 kg; the Yamaha XMAX 250 is a scooter with 250 cc, 22.4 hp and 183 kg. Power-to-weight with the rider: 423.7 hp/ton versus 86.8 hp/ton. On this measure the Kawasaki Z900 is 388% ahead.

In the simulation the Kawasaki Z900 covers 0-100 km/h (speedometer) in 3.13 s and the Yamaha XMAX 250 in 11.65 s; the Kawasaki Z900 is quicker by 8.51 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 43.7 m for the Kawasaki Z900 (with ABS) and 45.2 m for the Yamaha XMAX 250 (with ABS). The Kawasaki Z900 stops 1.5 m shorter. Calculated top speed: 234 km/h (manufacturer claim) versus 126 km/h (GPS measurement).

All values are an estimated simulation, not road-test measurements. Technical data comes from the sources listed below; the model uses model-specific parameters calibrated against published road tests for both. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.

Estimated simulationKawasaki Z900Yamaha XMAX 250
Classnaked bikescooter
Engine948 cc250 cc
Power122.0 hp22.4 hp
Wet weight213 kg183 kg
Power-to-weight (75 kg rider)423.7 hp/ton86.8 hp/ton
0-100 km/h (speedometer)3.13 s11.65 s
100-0 km/h braking distance43.7 m45.2 m
Top speed (calc.)234 km/h126 km/h

Data sources and calibration

Specifications: the sources below (manufacturer pages, plus road-test or spec sites where the manufacturer gives no figure). Acceleration, braking and top speed: Moto Kıyas physics simulation (power/torque curve, gearing, drag, traction and wheelie limits, ABS assumption), calibrated against published road tests where available. Estimated, not measured.

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