If straight-line speed is your priority, the Z400 takes the lead. With 30 HP more than the GSX-S125, it offers a more spirited ride that will be noticeable on highway overtakes or track days. When it comes to agility, the GSX-S125 has a clear advantage. Weighing in 32kg less than the Z400, it will feel significantly easier to handle in low-speed traffic, parking maneuvers, and twisty corners. Bottom Line: While both are capable, the z400 offers a superior power-to-weight ratio, making it the more exciting machine for experienced riders.
| Spec | Z400 | GSX-S125 |
|---|---|---|
| Displacement | 399 | 124 |
| Power | 45 | 15 |
| Cylinders | 2 | 1 |
| Weight | 167 | 135 |
| Seat height | 785 | 785 |