Yamaha Sirius FI (2025)

The Yamaha Sirius FI (2025) is listed in the Moto Kıyas database as a cub / underbone motorcycle with a 114 cc engine. The stored version is “Sirius FI (Vietnam, kampana)”. According to manufacturer data it makes 8.6 hp at 7,000 rpm and 9.5 Nm, with a wet weight of 98 kg. With a 75 kg rider the power-to-weight ratio is 49.6 hp/ton.

The Moto Kıyas physics model estimates 0-100 km/h (speedometer reading) in not reached (top simulated speed 89 km/h); because speedometers over-read, the true target is about 91.5 km/h. In a 60-0 km/h brake test it needs about 18.5 m of braking distance, or 23.5 m including a 0.3 s reaction time (ABS unknown, class assumption: no ABS). Calculated top speed is 88 km/h (estimated from power and drag). Among the 10 cub / underbone models in the database it ranks 3 of 10 for power-to-weight.

These figures are an estimated simulation, not a road-test measurement: flat dry asphalt, no wind, one 75 kg rider and no passenger. The model uses class-average calibration (no accepted model-specific road test). Technical data comes from the sources listed below. In the app the results change with rider weight, a passenger, a wet surface or a slope. Use the button to open the interactive comparison app (currently in Turkish) with this motorcycle selected, change the rider weight or pick a rival.