Ninja ZX-4RR -

Ninja ZX-4RR


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*Product pictures shown are for illustration purpose only.

*Actual product may vary from the picture shown here.

*Specification and pricing are subject to change.

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Class-Leading Engine Performance

Kawasaki takes 400cc engine performance to a new level, achieving an unprecedented 57 kW (77 PS)* of power. The howl of the engine as it revs beyond 15,000 min-1 adds to rider exhilaration. A quick-revving nature and direct throttle response are complemented by a flexible character that offers strong low- to mid-range torque for city riding, as well as screaming high- rpm power ideal for sport or track riding. *JPN spec homologated figure measured under fixed conditions. Specifications vary by market. Figure may vary depending on environment. May not apply to every unit.

High-Grade Suspension

The Ninja ZX-4R’s ø37 mm inverted fork uses SFF-BP internals to offer both racetrack performance and everyday usability while the Horizontal Back-link rear suspension offers a progressive character. Offering increased adjustability, the Ninja ZX-4R SE and ZX-4RR’s ront forks include adjustable spring preload, and the Ninja ZX-4RR features a Showa BFRC lite rear shock—the same type seen on the Ninja ZX-10R.

High-revving Performance

With a redline beyond 15,000 min-1 indicating its screaming potential, this engine features racing-inspired technology also found on the Ninja ZX-10R. The high revs deliver a distinctive, exhilarating engine sound characteristic of a high-performance Kawasaki In-line Four.

Premium Components and Features

Style meets substance with the Ninja ZX-4R’s high-class styling and high-grade package. Aggressive looks are complemented by premium features like TFT colour instrumentation providing clear information, integrated Riding Modes that link traction control and power modes for easy machine setup, and on the Ninja ZX-4R SE and ZX-4RR a quick shifter for fast, simple gear changes.

Ultra-Compact Nimble Supersport Chassis

A hallmark of the ZX series is razor-sharp handling with excellent feedback that inspires confidence, and the Ninja ZX-4R is no exception. This stems directly from Kawasaki’s WorldSBK racing efforts, and their work in developing the Ninja ZX-10R and Ninja ZX-6R. As a result, the Ninja ZX-4R offers a handling character similar to its siblings.

Dual-direction KQS (SE/RR)

Allowing riders to take even greater advantage of the Ninja ZX-4R’s exhilarating engine character, the quick shifter enables clutchless upshifts and downshifts for seamless acceleration and easy deceleration.

World Superbike Inspired Chassis Design

Key chassis dimensions (centre of gravity position, swingarm pivot position, engine axis positions, caster angle, etc) were inspired by Kawasaki’s World Superbike Ninja ZX-10RR racer, bringing WorldSBK chassis design thinking to the 400cc class.

Smartphone Connectivity

Bluetooth technology built into the instrument panel allows connection to smartphones via the “RIDEOLOGY THE APP” smartphone application, enabling ridersto access instrument functions for an enhanced motorcycling experience .

Trellis Frame with Optimised Rigidity Balance

Designed using Kawasaki’s advanced dynamic rigidity analysis, this trellis frame made from high-tensile steel delivers the required balance of strength and chassis flex to achieve the Ninja ZX-4R’s nimble supersport-style handling.

Fierce Ninja ZX Styling

Befitting the most powerful machine in the 400cc class, the Ninja ZX-4R’s aggressive Ninja styling exudes a fierce aura of restrained power and explosive action.

Ergonomics for Control and Comfort

Naturally aggressive riding position (more forward-leaning than the Ninja 400’s, but still slightly relaxed) lets riders take advantage of the Ninja ZX-4R’s nimble handling. The fuel tank feels slim, promoting good contact with the bike, while the shape of the firm seat cushion facilitates rider weight shift during sport riding, and is comfortable for longer rides.

Integrated Riding Mode

Four integrated riding modes (Sport, Road, Rain or Rider (manual)) make it simple to select a level of traction control and power mode to suit the current riding conditions.

Ram Air Intake

Complementing the centrally positioned Ram Air intake, the side Ram Air duct, designed with feedback from the Ninja H2, routes air to the air cleaner box and contributes to stellar performance. Its aggressive look and intake sound add to the screaming In-Line Four experience, and visually identify the bike as one of Kawasaki’s Ninja ZX models

All-LED Lighting

From its twin headlights to its Ninja ZX-10R-inspired taillight, all lighting on the Ninja ZX-4R is LED.

Dual Front Disc Brakes

The ZX-4R’s two ø290 mm front brake discs and radial-mount monobloc calipers provide sure stopping power, while also offering excellent braking feel to inspire confidence both on the track and on the street.

TFT Colour Instrumentation with Circuit Mo

The 4.3” all-digital TFT colour instrumentation with selectable display modes (Normal, Circuit) clearly displays the most pertinent information, whether on the street or on the track. Circuit Mode shows the gear position, lap times, and rpm above 10,000 more prominently.


Engine & Transmission
Type Liquid-cooled, 4-stroke, in-line four
Displacement 399 cm³
Bore and Stroke 57.0 x 39.1 mm
Compression ratio 12.3:1
Valve system DOHC, 16 valves
Fuel system Fuel injection: 34 mm x 4
Fuel Type / Minimum Octane Rating -
Ignition Digital
Starting Electric
Lubrication Forced lubrication, wet sump
Transmission 6-speed, return shift
Maximum power 57.0 kW {77 PS} / 14,500 rpm
Maximum power with Ram Air 58.7 kW {80 PS} / 14,500 rpm
Maximum torque 39.0 N•m {4.0 kgf•m} / 13,000 rpm
Electronic Rider Aid -
Dimensions & Chassis
Frame Type Trellis, high-tensile steel
Rake / Trail 97 mm
Tyre - Front 120/70 ZR17 M/C (58W)
Tyre - Rear 160/60 ZR17 M/C (69W)
Wheelbase 1,380 mm
Ground clearance 135 mm
Seat height 800 mm
Curb mass 189 kg
Fuel capacity 15.0 litres
Overall Dimensions (L x W x H) 1,990 x 765 x 1,110 mm
Brakes & Suspension
Front / Wheel Travel Single A-Arm with twin shock absorbers/ 120 mm
Rear / Wheel Travel Ø 37 mm, Horizontal Back-link, BFRC lite gas-charged shock with piggyback reservoir, compression and rebound damping, spring preload adjustability, and top-out spring/124 mm
Brake - Front Ø 290 mm/ Dual semi-floating discs
Caliper - Front Radial-mount, monobloc, opposed 4-piston
Brake - Rear Ø 220 mm/ Single disc
Caliper - Rear Single-piston


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