If straight-line speed is your priority, the GSX-R600 takes the lead. With 26 HP more than the ZX-4R, it offers a more spirited ride that will be noticeable on highway overtakes or track days. Both bikes share a similar footprint on the scale, with only a negligible 2kg difference between them, so handling characteristics will depend more on center-of-gravity than raw weight. Bottom Line: While both are capable, the gsxr600 offers a superior power-to-weight ratio, making it the more exciting machine for experienced riders.
| Spec | ZX-4R | GSX-R600 |
|---|---|---|
| Displacement | 399 | 599 |
| Power | 77 | 103 |
| Cylinders | 4 | 4 |
| Weight | 189 | 187 |
| Seat height | 800 | 810 |