RS 660 Extrema 2022 vs Ninja ZX-6R 2025

If straight-line speed is your priority, the Ninja ZX-6R takes the lead. With 24 HP more than the RS 660 Extrema, it offers a more spirited ride that will be noticeable on highway overtakes or track days. When it comes to agility, the RS 660 Extrema has a clear advantage. Weighing in 18kg less than the Ninja ZX-6R, it will feel significantly easier to handle in low-speed traffic, parking maneuvers, and twisty corners. Bottom Line: While both are capable, the zx6r offers a superior power-to-weight ratio, making it the more exciting machine for experienced riders.