Harley-Davidson Sportster S vs KTM 450 EXC-F

The Harley-Davidson Sportster S (2025) and the KTM 450 EXC-F (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 Harley-Davidson Sportster S is a cruiser with 1,252 cc, 120.7 hp and 228 kg; the KTM 450 EXC-F is a enduro bike with 450 cc, unlisted power and unlisted weight. Power-to-weight with the rider: 398.3 hp/ton versus no data.

In the simulation the Harley-Davidson Sportster S covers 0-100 km/h (speedometer) in 2.97 s and the KTM 450 EXC-F in 4.49 s; the Harley-Davidson Sportster S is quicker by 1.52 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 51.5 m for the KTM 450 EXC-F (ABS unknown, class assumption: no ABS). The Harley-Davidson Sportster S stops 6.8 m shorter. Calculated top speed: 194 km/h (manufacturer claim) versus 151 km/h (estimated from power and drag).

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 the Harley-Davidson Sportster S and class-average calibration (no accepted model-specific road test) for the KTM 450 EXC-F. Missing manufacturer data (power, torque, weight) is estimated by class regression, not measured. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.