KTM 450 EXC-F vs RKS RZ125

The KTM 450 EXC-F (2025) and the RKS RZ125 (2026) 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 RKS RZ125 is a sport bike with 125 cc, 14.5 hp and unlisted weight. Power-to-weight with the rider: no data versus 63.8 hp/ton.

In the simulation the KTM 450 EXC-F covers 0-100 km/h (speedometer) in 4.49 s and the RKS RZ125 in 13.42 s; the KTM 450 EXC-F is quicker by 8.92 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 51.5 m for the KTM 450 EXC-F (ABS unknown, class assumption: no ABS) and 36.4 m for the RKS RZ125 (with ABS). The RKS RZ125 stops 15.0 m shorter. Calculated top speed: 151 km/h (estimated from power and drag) versus 125 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.