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BMW R 1300 GS vs RKS RZ125
ESTIMATED SIMULATION
Run the comparison →The BMW R 1300 GS (2024) 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 BMW R 1300 GS is a adventure bike with 1,300 cc, 143.5 hp and 237 kg; the RKS RZ125 is a sport bike with 125 cc, 14.5 hp and unlisted weight. Power-to-weight with the rider: 459.9 hp/ton versus 63.8 hp/ton. On this measure the BMW R 1300 GS is 621% ahead.
In the simulation the BMW R 1300 GS covers 0-100 km/h (speedometer) in 2.96 s and the RKS RZ125 in 13.42 s; the BMW R 1300 GS is quicker by 10.46 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 41.4 m for the BMW R 1300 GS (with ABS) and 36.4 m for the RKS RZ125 (with ABS). The RKS RZ125 stops 5.0 m shorter. Calculated top speed: 225 km/h (manufacturer claim) 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 model-specific parameters calibrated against published road tests for the BMW R 1300 GS and class-average calibration (no accepted model-specific road test) for the RKS RZ125. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.
| Estimated simulation | BMW R 1300 GS | RKS RZ125 |
|---|---|---|
| Class | adventure bike | sport bike |
| Engine | 1,300 cc | 125 cc |
| Power | 143.5 hp | 14.5 hp |
| Wet weight | 237 kg | no data |
| Power-to-weight (75 kg rider) | 459.9 hp/ton | 63.8 hp/ton |
| 0-100 km/h (speedometer) | 2.96 s | 13.42 s |
| 100-0 km/h braking distance | 41.4 m | 36.4 m |
| Top speed (calc.) | 225 km/h | 125 km/h |
Data sources and calibration
Specifications: the sources below (manufacturer pages, plus road-test or spec sites where the manufacturer gives no figure). Acceleration, braking and top speed: Moto Kıyas physics simulation (power/torque curve, gearing, drag, traction and wheelie limits, ABS assumption), calibrated against published road tests where available. Estimated, not measured.