Ninja ZX-4RR

Track-focused 399cc inline-four with high-rev performance and a quickshifter, paired with sharp ZX styling. Premium suspension and radial brakes deliver controlled, modern precision on road or circuit.

1st-gen ZX-4RR introduced a high-revving 399cc inline-four in the 400 class, adding bi-directional quickshifter, ride modes and traction control, plus more track-focused suspension and braking hardware.

399cc liquid-cooled DOHC 16-valve inline-four tuned for high revs; 6-speed gearbox with bi-directional quickshifter (KQS), ride-by-wire with ride modes and KTRC traction control; chain final drive.