Kawasaki Ninja ZX 4RR Performance - 2025 Specifications and Reviews

The 2025 Kawasaki Ninja ZX-4RR Performance is a lightweight 399cc sport bike engineered for riders seeking accessible performance and track-capable handling. Its potent inline-four engine delivers 76.4 horsepower with sharp throttle response, making it ideal for both street enthusiasts and entry-level race competitors. Known for nimble agility and aggressive styling, this machine bridges the gap between beginner-friendly and serious sportbike performance.

2025
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General information

Color OptionsLime Green/Ebony/Pearl Blizzard White
CategorySport
Year2025

Engine and Transmission Specifications

StartingElectric
ClutchAssist and Slipper Clutch
Final DriveChain (final drive)
Gearbox6-speed
Cooling SystemLiquid
IgnitionDigital
Fuel ControlOverhead Cams (OHC)
InductionInjection. DFI® with dual 34mm throttle bodies
Valves Per Cylinder4
Bore x Stroke57.0 x 39.1 mm (2.2 x 1.5 inches)
Compression Ratio12.3:1
Max Torque39.0 Nm (4.0 kgf-m or 28.8 ft.lbs) @ 1300 RPM
Max Power76.4 HP (55.8 kW)) @ 14500 RPM
Engine TypeIn-line four, four-stroke
Capacity:399.0 ccm (24.35 cubic inches)

Physical measures and capacities

Fuel Capacity15.00 litres (3.96 US gallons)
Wheelbase1380 mm (54.3 inches)
Ground Clearance135 mm (5.3 inches)
Overall Width765 mm (30.1 inches)
Overall Length1990 mm (78.3 inches)
Overall Height1110 mm (43.7 inches)
Seat Height800 mm (31.5 inches) If adjustable, lowest setting.
Power/Weight Ratio0.4605 HP/kg
Wet Weight189.0 kg (416.7 pounds)
Dry Weight166.0 kg (366.0 pounds)
 
 

Kawasaki Ninja ZX 4RR Performance dimensions and frame

WheelsCast alloy, 5-spoke
Rear BrakesSingle disc. ABS.
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesDouble disc. ABS.
Rear Tyre160/60-17
Front Tyre120/70-17
Rear Wheel Travel124 mm (4.9 inches)
Rear SuspensionHorizontal Back-link, BFRC lite gas charged shock w/ piggyback reservoir, adjustable compression, rebound and spring preload
Front Wheel Travel120 mm (4.7 inches)
Front Suspension37mm inverted fork with SFF-BP internals and spring preload adjustability
Trail97 mm (3.8 inches)
FrameTrellis, high-tensile steel

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specsReport missing specs or required updates.
Warranty12 Month Limited Warranty
LightingLED lights
InstrumentsTFT color instrumentation
Rake (fork angle)23.5°
Motorcycle nameKawasaki Ninja ZX-4RR Performance

Performance Profile & Rider Fit

76.4 hp
Peak Power
4s
0-60 mph

Best For

Track90%
City45%
Cornering92%
Daily Riding40%
Touring30%
Passenger25%

Rider Profile

Best ForBest suited to intermediate to experienced riders who enjoy a high-revving engine and want to develop true sportbike skills.
PurposeBuilt primarily for spirited canyon carving and track days, with its screaming inline-four rewarding riders who explore the upper rev range.
Rider FitThe low, aggressive riding position and firm suspension demand a fit rider comfortable leaning forward with weight on the wrists for extended periods.
CharacterA rev-happy, high-revving inline-four sportbike that thrives on high RPM excitement rather than low-end torque, delivering a thrilling, engaging ride when pushed hard.
Not Ideal ForNot a good fit for riders seeking a relaxed commuter, long-distance tourer, or anyone wanting strong low-speed torque without working the gearbox.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2025 Kawasaki Ninja ZX 4RR Performance Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 800mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2025 Kawasaki Ninja ZX 4RR Performance, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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