RKS RZ125 vs Yamaha Exciter 155 VVA TCS

The RKS RZ125 (2026) and the Yamaha Exciter 155 VVA TCS (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 RKS RZ125 is a sport bike with 125 cc, 14.5 hp and unlisted weight; the Yamaha Exciter 155 VVA TCS is a cub / underbone with 155 cc, 18.2 hp and 124 kg. Power-to-weight with the rider: 63.8 hp/ton versus 91.7 hp/ton. On this measure the Yamaha Exciter 155 VVA TCS is 44% ahead.

In the simulation the RKS RZ125 covers 0-100 km/h (speedometer) in 13.42 s and the Yamaha Exciter 155 VVA TCS in 10.46 s; the Yamaha Exciter 155 VVA TCS is quicker by 2.95 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 36.4 m for the RKS RZ125 (with ABS) and 46.8 m for the Yamaha Exciter 155 VVA TCS (with ABS). The RKS RZ125 stops 10.4 m shorter. Calculated top speed: 125 km/h (estimated from power and drag) versus 115 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. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.