Engineered by Kawasaki for the sport motorcycle segment, the 2023 Kawasaki Ninja 400 Performance features a 399 cc (24.4 cu in) liquid-cooled twin, four-stroke configuration. In factory specification, peak output is rated at 45 HP (32.8 kW) at 10,000 rpm while maximum torque reaches 37 Nm (27.3 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 112.8 HP per liter and a 2,000 rpm working window between peak torque (8,000 rpm) and peak power (10,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Ninja 400 Performance measures 168 kg (370 lbs) dry, translating to a power-to-weight ratio of 0.27 HP/kg (3.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,369 mm (53.9 in) wheelbase engineered for quick, flickable steering geometry. The 14-liter (3.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
112.8 HP/L
Power-to-Weight
0.27 HP/kg (3.73 kg/HP)
Power Band Window
8,000–10,000 rpm
Standover Height
785 mm (30.9 in)
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeTwin, four-stroke
Power45.0 HP (32.8 kW)) @ 10000 RPM
Torque37.0 Nm (3.8 kgf-m or 27.3 ft.lbs) @ 8000 RPM
Compression11.5:1
Bore x Stroke70.0 x 51.8 mm (2.8 x 2.0 inches)
Valves/Cylinder4
Fuel SystemInjection. DFI® with dual 32mm throttle bodies
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCBI w/digital advance
LubricationForced lubrication, wet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet multi-disc, manual. Assist and Slipper.
DrivelineSealed chain
Chassis
Frame TypeTrellis, high-tensile steel
Rake24.7°
Trail92 mm (3.6 inches)
Front Suspension41mm hydraulic telescopic fork
Front Travel119 mm (4.7 inches)
Rear SuspensionBottom-Link Uni-Trak, gas-charged shock with adjustable preload
Rear Travel130 mm (5.1 inches)
Wheelbase1369 mm (53.9 inches)
Ground Clearance140 mm (5.5 inches)
Wheels & Brakes
Front Tyre110/70-R17
Rear Tyre150/70-R17
Front BrakesSingle disc. Single petal-type disc with 2-piston calipers. Optional ABS.
Front Brake Ø310 mm (12.2 inches)
Rear BrakesSingle disc. Single petal-type disc with single-piston caliper. Optional ABS.
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight168.0 kg (370.4 pounds)
Power/Weight0.2679 HP/kg
Seat Height785 mm (30.9 inches) If adjustable, lowest setting.
Overall Height1120 mm (44.1 inches)
Overall Length1989 mm (78.3 inches)
Overall Width711 mm (28.0 inches)
Fuel Capacity14.00 litres (3.70 US gallons)
Other
StarterElectric
Color OptionsMetallic Carbon Gray/Metallic Matte Carbon Gray, Lime Green/Ebony
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
