What category is the 2025 Kawasaki Z400?

General information
Category	Naked bike
Year	2025
Model	Kawasaki Z400

Engine and Transmission Specifications
Driveline	Sealed chain
Clutch	Assist and slipper Clutch
Transmission type	Chain (final drive)
Gearbox	5-speed
Cooling system	Air
Ignition	TCBI with digital advance
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection. DFIÂ® with 32mm throttle bodies
Bore x Stroke	70.0 x 51.8 mm (2.8 x 2.0 inches)
Compression	11.5:1
0-100 km/h (0-62 mph)	4.34 seconds
Top speed	180.3 km/h (112.0 mph)
Torque	38.0 Nm (3.9 kgf-m or 28.0 ft.lbs) @ 8000 RPM
Power	45.0 HP (32.8 kW) @ 10000 RPM
Engine type	Twin, four-stroke
Capacity:	399.0 ccm (24.35 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Single disc. ABS
Diameter	310 mm (12.2 inches)
Front brakes	Single disc. ABS
Rear tire	150/60-17M
Front tire	110/70-17M
Rear wheel travel	130 mm (5.1 inches)
Rear Suspension	Uni-TrakÂ® swingarm
Front wheel travel	119 mm (4.7 inches)
Front Suspension	Telescopic fork
Trail	91 mm (3.6 inches)
Rake (fork angle)	24.5°
Frame type	Trellis, high-tensile steel
Physical measures and capacities
Fuel capacity	14.00 litres (3.70 US gallons)
Wheelbase	1369 mm (53.9 inches)
Ground clearance	145 mm (5.7 inches)
Overall width	800 mm (31.5 inches)
Overall length	1989 mm (78.3 inches)
Overall height	1054 mm (41.5 inches)
Seat height	785 mm (30.9 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	165.0 kg (363.8 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Comments	Economical Riding Indicator.
Factory warranty	12 Month Limited Warranty
Starter	Electric
Color options	Metallic Matte Graphenesteel Gray/Metallic Spark Black, Pearl Robotic White/Metallic Matte Graphenesteel Gray

Performance Profile & Rider Fit

45 hp

Peak Power

4.3s

0-60 mph

112 mph

Top Speed

Best For

Track45%

City88%

Cornering75%

Daily Riding85%

Touring35%

Passenger50%

Rider Profile

Best For	Ideal for beginners and returning riders; the approachable 45hp twin, low weight and friendly ergonomics also make it a fun, forgiving second bike for intermediates.
Purpose	A lightweight middleweight naked built for commuting, city hopping and spirited weekend backroad rides, with enough legs for occasional short highway trips.
Rider Fit	Upright, roomy stance with a low 785mm seat and slim 165kg chassis. Easy reach to the ground, flat handlebar and neutral pegs keep it comfortable and unintimidating.
Character	Nimble, playful and easygoing. The parallel-twin revs eagerly, brakes and ABS inspire confidence, and the flickable trellis-framed chassis rewards without overwhelming.
Not Ideal For	Not for riders craving big-bore highway punch, long two-up touring, or any off-road use. Tall riders and those wanting relaxed cruising may find it small and buzzy.

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

Rider Fit Visualizer

2025 Kawasaki Z400 Rider Ergonomics Assessment

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Feet:

At 785mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2025 Kawasaki Z400, with a moderate knee angle of around 115 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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