Yamaha Finn vs Yamaha R25

The Yamaha Finn (2025) and the Yamaha R25 (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 Yamaha Finn is a cub / underbone with 114 cc, unlisted power and 100 kg; the Yamaha R25 is a sport bike with 250 cc, 35.4 hp and 169 kg. Power-to-weight with the rider: no data versus 145.1 hp/ton.

In the simulation the Yamaha Finn covers 0-100 km/h (speedometer) in 27.76 s and the Yamaha R25 in 6.40 s; the Yamaha R25 is quicker by 21.36 s. In the 60-0 km/h brake test, braking distance without the 0.3 s reaction time is 18.5 m for the Yamaha Finn (without ABS) and 14.4 m for the Yamaha R25 (ABS unknown, class assumption: no ABS). The Yamaha R25 stops 4.1 m shorter. The standard 60-0 test is used because one calculated top speed is below 110 km/h. Calculated top speed: 93 km/h (estimated from power and drag) versus 158 km/h (GPS measurement).

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 Yamaha Finn and model-specific parameters calibrated against published road tests for the Yamaha R25. 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.