KTM 450 EXC-F vs Yamaha Sirius FI

The KTM 450 EXC-F (2025) and the Yamaha Sirius FI (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 KTM 450 EXC-F is a enduro bike with 450 cc, unlisted power and unlisted weight; the Yamaha Sirius FI is a cub / underbone with 114 cc, 8.6 hp and 98 kg. Power-to-weight with the rider: no data versus 49.6 hp/ton.

0-100 km/h (speedometer): KTM 450 EXC-F 4.49 s, Yamaha Sirius FI not reached (top simulated speed 89 km/h). In the 60-0 km/h brake test, braking distance without the 0.3 s reaction time is 18.5 m for the KTM 450 EXC-F (ABS unknown, class assumption: no ABS) and 18.5 m for the Yamaha Sirius FI (ABS unknown, class assumption: no ABS). The standard 60-0 test is used because one calculated top speed is below 110 km/h. Calculated top speed: 151 km/h (estimated from power and drag) versus 88 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 both. Missing manufacturer data (power, torque, 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.