If straight-line speed is your priority, the 990 Duke takes the lead. With 27 HP more than the 790 Duke, 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 1kg difference between them, so handling characteristics will depend more on center-of-gravity than raw weight. Bottom Line: While both are capable, the 990duke offers a superior power-to-weight ratio, making it the more exciting machine for experienced riders.
| Spec | 790 Duke | 990 Duke |
|---|---|---|
| Displacement | 799 | 947 |
| Power | 94 | 121 |
| Cylinders | 2 | 2 |
| Weight | 189 | 190 |
| Seat height | 825 | 825 |