At the heart of the 2023 Kawasaki Ninja ZX-4RR KRT sport motorcycle, Kawasaki features a 399 cc (24.4 cu in) liquid-cooled in-line four, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 57.0 x 39.1 mm (2.2 x 1.5 inches) with a 12.3:1 compression ratio.
On the scales, the Ninja ZX-4RR KRT measures 166 kg (366 lbs) dry. Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,379 mm (54.3 in) wheelbase engineered for quick, flickable steering geometry. The 15.14-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
800 mm (31.5 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeIn-line four, four-stroke
Compression12.3:1
Bore x Stroke57.0 x 39.1 mm (2.2 x 1.5 inches)
Valves/Cylinder4
Fuel SystemInjection. DFI® with dual 34mm throttle bodies
Fuel ControlOverhead Cams (OHC)
IgnitionDigital
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchAssist and Slipper Clutch
Chassis
Frame TypeTrellis, high-tensile steel
Rake23.5°
Trail97 mm (3.8 inches)
Front Suspension37mm inverted fork with SFF-BP internals and spring preload adjustability
Front Travel119 mm (4.7 inches)
Rear SuspensionHorizontal Back-link, BFRC lite gas charged shock w/ piggyback reservoir, adjustable compression, rebound and spring preload
Rear Travel124 mm (4.9 inches)
Wheelbase1379 mm (54.3 inches)
Ground Clearance135 mm (5.3 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre160/60-17
Front BrakesDouble disc. ABS.
Front Brake Ø290 mm (11.4 inches)
Rear BrakesSingle disc. ABS.
Rear Brake Ø220 mm (8.7 inches)
WheelsCast alloy, 5-spoke
Dimensions & Weight
Dry Weight166.0 kg (366.0 pounds)
Seat Height800 mm (31.5 inches) If adjustable, lowest setting.
Overall Height1110 mm (43.7 inches)
Overall Length1991 mm (78.4 inches)
Overall Width765 mm (30.1 inches)
Fuel Capacity15.14 litres (4.00 US gallons)
Other
StarterElectric
Color OptionsLime Green/Ebony
InstrumentsTFT color instrumentation
LightLED lights
Warranty12 Month Limited Warranty
Notes
Small windscreen. Ride modes. Power modes. Traction control. Connectivity. Special KRT edition.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
