Harley-Davidson Street Bob vs Yamaha Tracer 9

The Harley-Davidson Street Bob (2025) and the Yamaha Tracer 9 (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 Street Bob is a cruiser with 1,923 cc, 91.2 hp and 293 kg; the Yamaha Tracer 9 is a touring bike with 890 cc, 117.3 hp and 219 kg. Power-to-weight with the rider: 247.8 hp/ton versus 399.1 hp/ton. On this measure the Yamaha Tracer 9 is 61% ahead.

In the simulation the Harley-Davidson Street Bob covers 0-100 km/h (speedometer) in 3.49 s and the Yamaha Tracer 9 in 2.95 s; the Yamaha Tracer 9 is quicker by 0.54 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 Street Bob (ABS unknown, class assumption: no ABS) and 45.0 m for the Yamaha Tracer 9 (ABS unknown, class assumption: no ABS). The Yamaha Tracer 9 stops 4.1 m shorter. Calculated top speed: 194 km/h (estimated from power and drag) versus 215 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 Street Bob and model-specific parameters calibrated against published road tests for the Yamaha Tracer 9. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.