Overview

The 2026 NINJA® ZX™-4R ABS brings Kawasaki’s inline four-cylinder supersport DNA to a compact, street‑friendly platform. It combines a high‑revving 399 cc engine with a lightweight chassis, advanced rider aids, and anti‑lock braking to deliver precise control and confident performance for everyday riding and track days alike.

Performance

At the core is a liquid‑cooled, DOHC, 16‑valve 399 cc inline‑four engineered to spin to exceptionally high rpm, producing responsive midrange and a strong surge toward redline. A close‑ratio 6‑speed gearbox, assist and slipper clutch, and centrally mounted ram‑air intake contribute to rapid acceleration and smooth corner entry. The character is unmistakably Ninja: crisp throttle response with a broad, usable spread of power.

Chassis and Braking

A high‑tensile steel trellis frame balances rigidity and feedback, paired with a Showa 37 mm SFF‑BP inverted fork and linked rear suspension tuned for stability and turn‑in agility. Dual front discs with radial‑mount four‑piston calipers provide strong, linear stopping power, while ABS is standard for added confidence on imperfect surfaces and in adverse conditions. Lightweight 17‑inch wheels and sport tires support quick transitions and consistent grip.

Electronics and Rider Interface

Ride‑by‑wire enables integrated riding modes that coordinate power delivery and Kawasaki Traction Control (KTRC), letting you tailor the bike to conditions ranging from rain to spirited canyon work. A color TFT display with smartphone connectivity (via RIDEOLOGY THE APP) provides clear access to vehicle data, ride logs, and notifications. Full LED lighting enhances visibility and modernizes the Ninja aesthetic. A Kawasaki Quick Shifter (KQS) is available depending on market and package, enabling clutchless upshifts and downshifts.

Ergonomics and Design

Aggressive, wind‑tunnel‑informed bodywork channels air to the ram‑air intake and around the rider, while the narrow mid‑section and a practical supersport riding position help reduce fatigue without dulling feel. The ZX styling cues—sharp cowl, compact tail, and purposeful stance—underscore the model’s track-bred intent.