Harley-Davidson Sportster S vs Kuba Superlight 125

The Harley-Davidson Sportster S (2025) and the Kuba Superlight 125 (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 Kuba Superlight 125 is a cruiser with 124 cc, 10.5 hp and unlisted weight. Power-to-weight with the rider: 398.3 hp/ton versus 42.5 hp/ton. On this measure the Harley-Davidson Sportster S is 838% ahead.

0-100 km/h (speedometer): Harley-Davidson Sportster S 2.97 s, Kuba Superlight 125 not reached (top simulated speed 91 km/h). In the 60-0 km/h brake test, braking distance without the 0.3 s reaction time is 16.1 m for the Harley-Davidson Sportster S (with ABS) and 17.7 m for the Kuba Superlight 125 (ABS unknown, class assumption: no ABS). The Harley-Davidson Sportster S stops 1.6 m shorter. The standard 60-0 test is used because one calculated top speed is below 110 km/h. Calculated top speed: 194 km/h (manufacturer claim) versus 90 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 Kuba Superlight 125. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.