If straight-line speed is your priority, the 990 Duke takes the lead. With 53 HP more than the Z650, it offers a more spirited ride that will be noticeable on highway overtakes or track days. When it comes to agility, the Z650 has a clear advantage. Weighing in 6kg less than the 990 Duke, it will feel significantly easier to handle in low-speed traffic, parking maneuvers, and twisty corners. Riders with a shorter inseam should lean towards the Z650. Its seat height is 35mm lower than the 990 Duke, making it much easier to flat-foot at stoplights and increasing confidence during stops. 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 | Z650 | 990 Duke |
|---|---|---|
| Displacement | 648 | 947 |
| Power | 68 | 121.4 |
| Cylinders | 2 | 2 |
| Weight | 188 | 193.8 |
| Seat height | 790 | 825 |