RS 660 2026 vs RC390 2024

If straight-line speed is your priority, the RS 660 takes the lead. With 62 HP more than the RC390, it offers a more spirited ride that will be noticeable on highway overtakes or track days. When it comes to agility, the RC390 has a clear advantage. Weighing in 11kg less than the RS 660, it will feel significantly easier to handle in low-speed traffic, parking maneuvers, and twisty corners. Bottom Line: While both are capable, the rs660 offers a superior power-to-weight ratio, making it the more exciting machine for experienced riders.