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Non-U.S. model specs may be depicted. Equipment illustrated and specification may vary to meet individual markets.
- 2024 MODEL
- 2023
Awaken Your Supersport
Non-U.S. model specs may be depicted. Equipment illustrated and specification may vary to meet individual markets.
- 2023 NINJA® ZX™-4RR KRT EDITION
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SPECS GALLERY OFFERS SIMILAR MODELS
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MSRP
$9,699
$750 SAVINGS
Destination Charge $435
Commodity Surcharge $300
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Specifications and pricing are subject to change.
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MODEL SPECS |
Select a Color
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RAM AIR DUCT
INTAKE SYSTEM
KAWASAKI QUICK
SHIFTER (KQS)
Click on a technology to learn more.
Engine Management Technology
- Assist & Slipper Clutch
- Economical Riding Indicator
- Electronic Throttle Valves
- KTRC (Kawasaki Traction Control)
- KQS (Kawasaki Quick Shifter)
- Power Modes
- Smartphone Connectivity
Chassis Management Technology
- ABS (Anti-lock Brake System)
- Horizontal Back-link Rear Suspension
Engine | 4-stroke, In-Line Four-Cylinder, DOHC, 16-valve, liquid-cooled |
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Displacement | 399cc |
Bore x Stroke | 57.0 x 39.1mm |
Compression Ratio | 12.3:1 |
Fuel System | DFI® with 34mm throttle valves (4) |
Ignition | Digital |
Transmission | 6-speed, manual, return shift |
Final Drive | Chain |
Electronic Rider Aids | Economical Riding Indicator, Kawasaki TRaction Control (KTRC) (3-mode), Kawasaki Quick Shifter (KQS) (dual direction), Power Modes, Anti-lock Brake System (ABS) |
Front Suspension / Wheel Travel | 37mm inverted fork with SFF-BP internals and spring preload adjustability/4.7 in |
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Rear Suspension / Wheel Travel | Horizontal Back-link, BFRC lite gas charged shock w/ piggyback reservoir, adjustable compression, rebound and spring preload/4.9 in. |
Front Tire | 120/70 - 17 |
Rear Tire | 160/60 - 17 |
Front Brakes | Dual 290mm discs, ABS |
Rear Brakes | Single 220mm disc, ABS |
Frame Type | Trellis, high-tensile steel |
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Rake/Trail | 23.5°/3.8 in |
Overall Length | 78.4 in |
Overall Width | 30.1 in |
Overall Height | 43.7 in |
Ground Clearance | 5.3 in |
Seat Height | 31.5 in |
Curb Weight | 414.5 lb* |
Fuel Capacity | 4.0 gal |
Wheelbase | 54.3 in |
Special Features | 4.3" Full-Color TFT Instrumentation, Smartphone Connectivity via RIDEOLOGY THE APP |
Color Choices | Lime Green/Ebony |
Warranty | 12 Month Limited Warranty |
Kawasaki Protection Plus™ (optional) | 12, 24, 36 or 48 months |
VIEW WARRANTY INFO DOWNLOAD SPECS
*Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied).
KAWASAKI CARES: Read Owner’s Manual and all on-product warnings. Always wear a helmet, eye protection and proper apparel. Never ride under the influence of drugs or alcohol. Adhere to the maintenance schedule in your Owner’s Manual. ©2024 Kawasaki Motors Corp., U.S.A.
Specifications subject to change.
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SIMILAR MODELS |
SUPERSPORT
NINJA® ZX™-4R
NINJA® ZX™-6R
NINJA® ZX™-10R
NINJA® ZX™-14R
Based on feedback from racing activities, the Assist & Slipper Clutch uses two types of cams (an assist cam and a slipper cam) to either drive the clutch hub and operating plate together or apart.
Under normal operation, the assist cam functions as a self-servo mechanism, pulling the clutch hub and operating plate together to compress the clutch plates. This allows the total clutch spring load to be reduced, resulting in a lighter clutch lever feel when operating the clutch.
When excessive engine braking occurs – as a result of quick downshifts (or an accidental downshift) – the slipper cam comes into play, forcing the clutch hub and operating plate apart. This relieves pressure on the clutch plates to reduce back-torque and helps prevent the rear tire from hopping and skidding. This race-style function is particularly useful when sport or track riding.
Assist & Slipper Clutch
Using high-precision electronic control for engine management, Kawasaki models can achieve a high level of fuel efficiency. However, fuel consumption is greatly affected by throttle use, gear selection, and other elements under the rider's control. The Economical Riding Indicator is a function that indicates when current riding conditions are consuming a low amount of fuel. The system continuously monitors fuel consumption, regardless of vehicle speed, engine speed, throttle position and other riding conditions. When fuel consumption is low for a given speed (i.e. fuel efficiency is high), an "ECO" mark appears on the instrument panel's LCD screen. By riding so that the "ECO" mark remains on, fuel consumption can be reduced.
While effective vehicle speed and engine speed may vary by model, paying attention to conditions that cause the "ECO" mark to appear can help riders improve their fuel efficiency – a handy way to increase cruising range. Further, keeping fuel consumption low also helps minimize negative impact on the environment.
Economical Riding Indicator
Kawasaki’s fully electronic throttle actuation system enables the ECU to control the volume of both the fuel (via fuel injectors) and the air (via throttle valves) delivered to the engine. Ideal fuel injection and throttle valve position results in smooth, natural engine response and the ideal engine output. The system also makes a significant contribution to reduced emissions.
Electronic throttle valves also enable more precise control of electronic engine management systems like S-KTRC and KTRC, and allow the implementation of electronic systems like KLCM, Kawasaki Engine Brake Control, and Electronic Cruise Control.
Electronic Throttle Valves
KTRC, Kawasaki's advanced traction control system provides both enhanced sport riding performance and the peace of mind to negotiate slippery surfaces with confidence. Multiple rider-selectable modes (the number of modes varies by model) offer progressively greater levels of intrusion to suit the riding situation and rider preference.
Less intrusive modes maintain optimum traction during cornering. Designed with sport riding in mind, they facilitate acceleration out of corners by maximizing forward drive from the rear wheel. And because Kawasaki’s sophisticated software bases its dynamic analysis on the chassis’ orientation relative to the track surface (rather than relative to a horizontal plane), it is able to take into account corner camber, gradient, etc., and adapt accordingly.
In the more intrusive modes (and for some models, in any mode), when excessive wheel spin is detected, engine output is reduced to allow grip to be regained, effectively enabling riders to negotiate both short, slippery patches (train tracks or manhole covers) and extended stretches of bad roads (wet pavement, cobblestone, gravel) with confidence.
Models equipped with IMU incorporate chassis-orientation feedback to offer even more precise management.
KTRC (Kawasaki Traction Control)
Designed to help riders maximize their acceleration on the track by enabling clutchless upshifts with the throttle fully open, KQS detects that the shift lever has been actuated and sends a signal to the ECU to cut ignition so that the next gear can be engaged without having to use the clutch. On models that offer clutchless downshifts, during deceleration the system automatically controls engine speed so that the next lower gear can be selected without operating the clutch.
KQS (Kawasaki Quick Shifter)
Models equipped with multiple Power Modes offer riders an easily selectable choice of engine power delivery to suit riding conditions or preference. In addition to Full Power mode, one (Low) or two (Middle, Low) alternate mode(s) in which maximum power is limited and throttle response is milder are provided.
Power Modes
Clever technology enables riders to connect to their motorcycle wirelessly. Using the smartphone application “RIDEOLOGY THE APP,” a number of instrument functions can be accessed, contributing to an enhanced motorcycling experience. Vehicle information (such as the odometer, fuel gauge, maintenance schedule, etc) can be viewed on the smartphone. Riding logs (varies by model, but may include GPS route, gear position, rpm, and other information) can be viewed on the smartphone. When connected, telephone (call, mail) notices are displayed on the instrument panel. Riders can also make changes to their motorcycle’s instrument display settings (preferred units, clock and date setting, etc) via the smartphone. And on certain models, it is even possible to check and adjust vehicle settings (such as Rider Mode, electronic rider support features, and payload settings) using the smartphone.
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Kawasaki ABS systems use front and rear wheel sensors to constantly monitor wheel speed. Should information from either of the sensors indicate that wheel lock has occurred, the ABS ECU directs the pump in the ABS unit to modulate brake fluid pressure (releasing and reapplying pressure so that traction can be regained) until normal operation resumes. ABS offers rider reassurance that contributes to greater riding enjoyment.
Compared to the Kawasaki traditional Uni-Trak® rear suspension, which mounts the shock unit vertically, with Horizontal Back-link Rear Suspension, the shock unit is almost horizontal. The original Kawasaki suspension arrangement locates the shock unit very close to the bike's center of gravity, greatly contributing to mass centralization. And because there is no linkage or shock unit protruding beneath the swingarm, this frees up space for a larger exhaust pre-chamber (an exhaust expansion chamber situated just upstream of the silencer). With a larger pre-chamber, silencer volume can be reduced, and heavy exhaust components can be concentrated closer to the center of the bike, further contributing to mass centralization. The result is greatly improved handling.
A secondary benefit is that the shock unit is placed far away from exhaust heat. Because it is more difficult for heat from the exhaust system to adversely affect suspension oil and gas pressure, suspension performance is more consistent.
Horizontal Back-link Rear Suspension
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