Harley-Davidson Sportster S vs Yamaha Finn

The Harley-Davidson Sportster S (2025) and the Yamaha Finn (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 Yamaha Finn is a cub / underbone with 114 cc, unlisted power and 100 kg. 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 Yamaha Finn in 27.76 s; the Harley-Davidson Sportster S is quicker by 24.79 s. 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 18.5 m for the Yamaha Finn (without ABS). The Harley-Davidson Sportster S stops 2.4 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 93 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 Yamaha Finn. Missing manufacturer data (power, torque) 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.