Harley-Davidson Fat Boy vs Suzuki V-Strom 800 DE

The Harley-Davidson Fat Boy (2025) and the Suzuki V-Strom 800 DE (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 Fat Boy is a cruiser with 1,923 cc, 103.3 hp and 315 kg; the Suzuki V-Strom 800 DE is a adventure bike with 776 cc, 83.1 hp and unlisted weight. Power-to-weight with the rider: 264.8 hp/ton versus 282.1 hp/ton. On this measure the Suzuki V-Strom 800 DE is 7% ahead.

In the simulation the Harley-Davidson Fat Boy covers 0-100 km/h (speedometer) in 3.54 s and the Suzuki V-Strom 800 DE in 3.49 s; the Suzuki V-Strom 800 DE is quicker by 0.05 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 49.1 m for the Harley-Davidson Fat Boy (ABS unknown, class assumption: no ABS) and 41.4 m for the Suzuki V-Strom 800 DE (with ABS). The Suzuki V-Strom 800 DE stops 7.7 m shorter. Calculated top speed: 201 km/h (estimated from power and drag) versus 190 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 class-average calibration (no accepted model-specific road test) for the Harley-Davidson Fat Boy and model-specific parameters calibrated against published road tests for the Suzuki V-Strom 800 DE. Missing manufacturer data (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.