If straight-line speed is your priority, the 990 Duke R takes the lead. With 17 HP more than the Monster SP, 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 4kg 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 | Monster SP | 990 Duke R |
|---|---|---|
| Displacement | 937 | 947 |
| Power | 111 | 128 |
| Cylinders | 2 | 2 |
| Weight | 186 | 190 |
| Seat height | 840 | 840 |