Harley-Davidson Sportster S vs Kawasaki Ninja ZX-10R

The Harley-Davidson Sportster S (2025) and the Kawasaki Ninja ZX-10R (2026) 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 Harley-Davidson Sportster S is a cruiser with 1,252 cc, 120.7 hp and 228 kg; the Kawasaki Ninja ZX-10R is a sport bike with 998 cc, 193.1 hp and 209 kg. Power-to-weight with the rider: 398.3 hp/ton versus 680.0 hp/ton. On this measure the Kawasaki Ninja ZX-10R is 71% ahead.

In the simulation the Harley-Davidson Sportster S covers 0-100 km/h (speedometer) in 2.97 s and the Kawasaki Ninja ZX-10R in 3.16 s; the Harley-Davidson Sportster S is quicker by 0.19 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 44.7 m for the Harley-Davidson Sportster S (with ABS) and 36.4 m for the Kawasaki Ninja ZX-10R (with ABS). The Kawasaki Ninja ZX-10R stops 8.3 m shorter. Calculated top speed: 194 km/h (manufacturer claim) versus 286 km/h (manufacturer claim).

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.