Kawasaki to introduce Ninja ZX-4R four-cylinder Supersport

 Kawasaki Motors Corporation has announced that it will launch a mid-weight, high performance machine in its famous Ninja range to be called the Ninja ZX-4R. Incorporating a newly designed engine and frame, the exciting new addition to Kawasaki’s Supersports line will also include Ninja ZX-4R SE and Ninja ZX-4RR variants in countries where they are introduced in February 2023 and thereafter. The model is expected in Europe in the Autumn of 2023.

With specifications varying by market, the most powerful Ninja ZX-4R is equipped with a high-output engine that delivers an exceptional 80 PS in a lightweight, compact Ninja ZX-25R-based chassis for superior cornering performance and acceleration feeling. At its introduction, the Ninja ZX will be the only full-fairing supersport model in the 400cc class with a parallel four-cylinder engine. It inherits the aggressive appearance and premium equipment expected of the Ninja ZX family while refining the sensation-provoking exhaust sound of the high-revving four-cylinder engine. 

Whether a seasoned rider or new to the joys of Supersport, Ninja ZX-4R riders will experience the exciting riding pleasure of the “APEX PREDATOR” concept on the racetrack or on the street. 

At the heart of this immediately impressive machine is a newly developed 399cc liquid-cooled, parallel 4-cylinder DOHC engine based on technology from Kawasaki's legendary Ninja ZX series of supersport machines, which is able to deliver a maximum output of 57 kW (77 PS) and 59 kW (80 PS) when ram air is pressurized*. The engine has been conceived to combine strong low- and mid-range torque with strong power at high rpm and in all riding situations, from daily use to on-track sport riding. 

Equipped with Kawasaki’s world-famous Ram Air system that increases filling efficiency and contributes to improved engine performance, the air intake is located in the centre of the upper cowl, providing styling that is instantly recognisable as part of the Ninja ZX series. The Ram Air ducts are located on the left side of the front forks, leading to the airbox while the “Ram Air” stamping is visible to the rider to show off the performance of the Ram Air system. The ultra high-revving engine, which revs above 15,000 rpm, delivers the exhilarating exhaust sound that only a Kawasaki high-performance parallel four-cylinder engine can deliver. 

In terms of chassis, the configuration is focused on excellent handling performance and is inspired by the chassis elements and design concept of the Ninja ZX-10RR World Superbike. Featuring a high-tensile steel trellis frame and a curved long-type swingarm, the frame achieves an idealised front-rear weight distribution plus an excellent balance of rigidity and flexibility, providing nimble handling and great rider feedback. 

Showa's advanced SFF-BP front fork (Ninja ZX-4R SE and Ninja ZX-4RR models feature a preload adjustment mechanism) is featured with the rear equipped with a horizontal back-link rear suspension system offering the same progressive characteristics of the Ninja ZX-10R supersport model, contributing to the superb handling performance typical of supersport models. Additionally, the Ninja ZX-4RR variant features the same type of Showa BFRC-lite rear shock as the Ninja ZX-10R. 

Braking power is delivered via f290mm semi-floating front twin discs and radial-mounted monobloc calipers, while the rear uses a large-diameter f220mm disc. The overall package delivers powerful braking force and excellent brake feel, response and power. In terms of braking effectiveness and grip, the F120/R160 tyre combination adopted is designed to match the Ninja ZX-4R's dynamic performance and provide excellent stability at high speeds. 

At first sight there is no mistaking the lines of this new Ninja with its aggressive styling that exudes the power and instantaneous force that the Ninja ZX series is known for. The Ninja ZX-4R's high-grade appearance is also enhanced by the use of LEDs for all lighting, from the twin-light headlight to the taillight. 

Electronic rider aids also feature prominently on this latest Ninja with integrated riding modes that link KTRC (Kawasaki Traction Control) and Power Modes. From four different modes – Sport, Road, Rain, and Rider (Manual), the rider can easily select the appropriate setting to suit the riding conditions and his or her own riding style. Also fitted to the Ninja ZX-4R SE and Ninja ZX-4RR is a dual direction KQS (Kawasaki Quick Shifter) enabling clutchless shifting up/down.           

The meter panel of the Ninja ZX-4R is equipped with a 4.3-inch full-digital colour LCD screen providing high visibility and a premium feel. It integrates a track mode that displays lap times, gear positions, and RPMs from 10,000 rpm and above in an easy-to-read manner. The Kawasaki RIDEOLOGY application can be used to connect to a Smartphone for a variety of functions, including recording GPS route information and vehicle riding information. 

In addition to the Ninja ZX-4R, the following two variants are available: 

Ninja ZX-4R SE:
This special edition model features original colours and graphics inspired by the machines of Kawasaki's factory racing team, the Kawasaki Racing Team (KRT), as well as numerous accessories as standard equipment.

-Dual direction KQS
-Smoked windshield
-USB power socket
-Frame Slider 

Ninja ZX-4RR:
In addition to the original Kawasaki Racing Team-inspired colours and “RR” graphics, the rear suspension features Showa's BFRC-lite, the same type used on the Ninja ZX-10R supersport model. This specification allows for a more sporty riding experience.
-Dual direction KQS

Model Ninja ZX-4R / Ninja ZX-4R SE / Ninja ZX-4RR
Dimensions 1,990mm×765mm×1,110mm
Wheelbase 1,380mm
Ground Clearance 135mm
Seat Height 800mm
Caster/Trail 23.5° / 97mm
Engine type/ Valve system Water-cooled, Four-Stroke, Four-Cylinder
Capacity 399cm3
Bore and Stroke 57.0×39.1mm
Compression ratio 12.3:1
Starter Electric self-start
Ignition Battery and Coil (transistor ignition)
Lubrication method Wet Sump
Oil capacity 3.0L
Fuel supply Fuel injection
Transmission 6 speed
Clutch Wet multi-plate
Ratios 1st 2.929 (41/14)
2nd 2.056 (37/18)
3rd 1.619 (34/21)
4th 1.333 (32/24)
5th 1.154 (30/26)
6th 1.037 (28/27)
Primary/Secondary Reduction 2.029 (69/34) / 3.429 (48/14)
Frame layout Trellis (High Tensile Steel)
Suspension Front Telescopic
Rear Swingarm (Horizontal back link)
Tyre size Front 120/70ZR17M/C (58W)
Rear 160/60ZR17M/C (69W)
Brake type Front Dual disc 290mm (Outer diameter)
Rear Single disc 220mm(Outer diameter)
Steering angle (Left and Right) 35° / 35°
Vehicle weight Ninja ZX-4R / Ninja ZX-4RR: 188kg
Ninja ZX-4R SE: 189kg
Fuel capacity 15L

  • Specifications subject to change without notice
  • Specifications may vary by market
  • Introduction dates (and model variants introduced) may vary by market

Kawasaki – Have Bag Will Travel

If you made a new year resolution to take no personal baggage into 2023 you are out of luck, Kawasaki has just launched an expanded range of desirable high-quality luggage for the new season, and it covers all the bases.

From backpacks to trolley bags all the way up to a bag large enough to carry an entire set of riding gear, the range comprises six items for the new season with no less than three bags making their debuts.

A 20l capacity sports backpack is first in line complete with lap top pocket, Kawasaki Rivermark logo and even Kawasaki branded zip pullers. Like most partner bags in the range, the dominant colour is black with subtle and effective lime green and white highlights.

Also new is a highly adaptable Canvas bag with both shoulder straps and carry handles that features a convenient padded base so delicate items are cushioned when you put the 27l capacity bag down. To close, the bag features an eyelet and chord hook fastener system further increasing its urban chic credentials.

From respected luggage maker Ogio there are four Kawasaki branded items to complete the 2023 range. For all weather riders and “outdoorsy” types, the waterproof backpack is a boon. Created in welded 420D nylon with a TPU film laminate, its main job in life is keeping your gear dry with the much favoured roll top closing plus three water resistant outer pockets and a capacity of 26l.

This is partnered by an Ogio backpack that can accommodate a large laptop (up to 17inches or 43.2cm) and an overall 40l capacity. It’s also worth noting that many items in the 2023 range comply with airline carry on regulations so check when you book and make your travelling life faster and easier.

And for frequent flyers in the check-in queue, the Ogio trolley bag takes up to 50l. With its telescopic pull handle, integrated wheels and reinforced contact points, this subtle black bag with white Kawasaki logo is classy and practical in equal measure.

Speaking of flights, last off the luggage carousel is the Kawasaki Ogio gear bag featuring SLED technology which stands for Structural Load Equalising Deck. Big rubber tyred wheels mean business and the telescopic pull handle is well up to the job of manoeuvring a “that’s it I’m off to a foreign track day” gear bag that can cope with a humungous 123l load.

It’s a fact of life – if you have stuff, you need a bag and Kawasaki have just about the most practical, durable, and fashionable branded range ready for you at your local dealer or to order from selected on-line outlets. So, make a new year resolution you are happy to keep, travel in style in 2023 with Kawasaki. 

For further information – including dimensions and prices – please go to www.kawasaki.co.uk