The Kawasaki Ninja ZX-4R is one of the most exciting motorcycles in the 400cc segment. Designed for riders who crave high-revving performance, aggressive styling, and race-ready features, the ZX-4R stands out as a true supersport machine. With its inline-four engine, advanced electronics, and sharp aesthetics, this bike is set to dominate both streets and tracks in 2025.
If you’re looking for the best 400cc sportbike, the Ninja ZX-4R is a top contender. Let’s dive into its specs, features, price, and why it’s making waves in the motorcycling world.
Kawasaki Ninja ZX-4R: Key Specifications & Features
1. High-Performance 399cc Inline-Four Engine
Unlike most competitors in the 400cc class that use twin-cylinder engines, the ZX-4R features a 399cc inline-four powerhouse. This engine delivers:
Peak power of 75 HP (with RAM air) 14,500 RPM redline for an exhilarating ride Smooth power delivery & thrilling exhaust note
This makes the ZX-4R one of the most powerful 400cc bikes available, giving riders a mini superbike experience.
2. Aggressive Ninja ZX-Series Design
Inspired by the Kawasaki Ninja ZX-6R and ZX-10R, the ZX-4R features:
Twin LED headlights with a sharp front fairing Aerodynamic bodywork for high-speed stability Sporty clip-on handlebars and aggressive riding stance
Its race-inspired design ensures maximum performance on both street and track.
3. Advanced Electronics for Superior Control
Kawasaki has equipped the ZX-4R with cutting-edge tech, including:
Ride-by-wire throttle for precise control Multiple riding modes (Sport, Road, Rain, Rider Custom) Traction control & cornering ABS Quickshifter for seamless gear changes
These features make the ZX-4R one of the most advanced lightweight supersport bikes in its class.
4. High-Performance Suspension & Braking
The ZX-4R is built for precision handling with:
41mm Showa USD forks (SFF-BP) for better stability Adjustable rear monoshock for a smooth ride Dual 290mm front discs with radial calipers for sharp braking
This setup ensures superior handling and stopping power, making it perfect for spirited rides and track days.
Kawasaki Ninja ZX-4R: Price & Availability
The Kawasaki Ninja ZX-4R 2025 is expected to be priced at $8,000 – $9,000 USD, making it an attractive option for riders looking for a high-performance, small-displacement supersport.
Expected Launch Date: Mid-2025
Available Colors: Kawasaki Racing Green, Metallic Black, Pearl White
Is the Ninja ZX-4R Worth Buying?
If you’re a sportbike enthusiast who wants a lightweight, high-revving, and tech-loaded machine, the Kawasaki Ninja ZX-4R is a fantastic choice. It offers big-bike thrills in a compact package, making it ideal for both beginners and experienced riders.
Final Thoughts
With class-leading performance, premium features, and aggressive styling, the Ninja ZX-4R is set to be one of the most exciting 400cc sportbikes in 2025. Whether you’re hitting the streets or the track, this bike promises an adrenaline-fueled riding experience.
Are you excited about the Kawasaki Ninja ZX-4R? Let us know in the comments! 
