RS 660 2026 vs XSR 900 GP 2024

If straight-line speed is your priority, the XSR 900 GP takes the lead. With 12 HP more than the RS 660, it offers a more spirited ride that will be noticeable on highway overtakes or track days. When it comes to agility, the RS 660 has a clear advantage. Weighing in 17kg less than the XSR 900 GP, 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 RS 660. Its seat height is 15mm lower than the XSR 900 GP, making it much easier to flat-foot at stoplights and increasing confidence during stops. Bottom Line: It's a close call. Choose the rs660 if you prefer its specific styling and ergonomics, or the xsr900 if you want the alternative brand character.