If straight-line speed is your priority, the Ninja ZX-6R takes the lead. With 7 HP more than the YZF-R9, 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 3kg difference between them, so handling characteristics will depend more on center-of-gravity than raw weight. Bottom Line: It's a close call. Choose the zx6r if you prefer its specific styling and ergonomics, or the r9 if you want the alternative brand character.
| Spec | Ninja ZX-6R | YZF-R9 |
|---|---|---|
| Displacement | 636 | 890 |
| Power | 124 | 117 |
| Cylinders | 4 | 3 |
| Weight | 198 | 195 |
| Seat height | 830 | 830 |
| MSRP (US) | 11390 | 12499 |