What category is the 2021 Kawasaki Ninja 400?

The 2021 Kawasaki Ninja 400 has a Category of Sport.

What is the engine size of the 2021 Kawasaki Ninja 400?

The 2021 Kawasaki Ninja 400 has a Capacity: of 399.0 ccm (24.35 cubic inches).

What type of engine does the 2021 Kawasaki Ninja 400 have?

The 2021 Kawasaki Ninja 400 has a Engine type of Twin, four-stroke.

Is the 2021 Kawasaki Ninja 400 air cooled or liquid cooled?

The 2021 Kawasaki Ninja 400 has a Cooling system of Liquid.

How many gears does the 2021 Kawasaki Ninja 400 have?

The 2021 Kawasaki Ninja 400 has a Gearbox of 6-speed.

How much does the 2021 Kawasaki Ninja 400 weigh?

The 2021 Kawasaki Ninja 400 has a Dry weight of 167.0 kg (368.2 pounds).

What is the seat height of the 2021 Kawasaki Ninja 400?

The 2021 Kawasaki Ninja 400 has a Seat height of 785 mm (30.9 inches) If adjustable, lowest setting..

Kawasaki Ninja 400 - 2021 Specifications and Reviews

Name: 2021 Kawasaki Ninja 400
Brand: Kawasaki

The 2021 Kawasaki Ninja 400 is an entry-level sport bike perfectly suited for new riders and commuters seeking an affordable, nimble machine. Its lightweight 399cc twin-cylinder engine delivers approachable power with excellent fuel efficiency, while the assist and slipper clutch make it forgiving in urban riding. Known for its sleek Ninja styling and reliable performance, it strikes an ideal balance between sportiness and practicality.

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General information
Price as new	3.6 Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike.
Category	Sport
Year	2021
Model	Kawasaki Ninja 400

Engine and Transmission Specifications
Clutch	Assist and Slipper Clutch
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Liquid
Ignition	TCBI w/digital advance
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection
Bore x Stroke	70.0 x 51.8 mm (2.8 x 2.0 inches)
Compression	11.5:1
Engine type	Twin, four-stroke
Capacity:	399.0 ccm (24.35 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Single disc. Single petal-type disc with single-piston caliper. Optional ABS.
Diameter	310 mm (12.2 inches)
Front brakes	Single disc. Single petal-type disc with 2-piston calipers. Optional ABS.
Rear tire	150/70-17
Front tire	110/70-17
Rear wheel travel	130 mm (5.1 inches)
Rear Suspension	Horizontal back-link with adjustable spring preload
Front wheel travel	119 mm (4.7 inches)
Front Suspension	41mm hydraulic telescopic fork
Trail	91 mm (3.6 inches)
Rake (fork angle)	24.7°
Frame type	Trellis, high-tensile steel
Physical measures and capacities
Fuel capacity	3.70 litres (0.98 US gallons)
Wheelbase	1369 mm (53.9 inches)
Ground clearance	140 mm (5.5 inches)
Overall width	711 mm (28.0 inches)
Overall length	1989 mm (78.3 inches)
Overall height	1120 mm (44.1 inches)
Seat height	785 mm (30.9 inches) If adjustable, lowest setting.
Dry weight	167.0 kg (368.2 pounds)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Comments	Small windscreen. Economical Riding Indicator.
Factory warranty	12 Month Limited Warranty
Starter	Electric
Color options	Pearl Blizzard White, Metallic Spark Black/ Metallic

Performance Profile & Rider Fit

45 hp

Peak Power

5.5s

0-60 mph

Best For

Track70%

City80%

Cornering85%

Daily Riding78%

Touring40%

Passenger50%

Rider Profile

Best For	Ideal for beginners and returning riders; forgiving power delivery and light weight also make it a fun commuter or track-day starter for experienced riders.
Purpose	A lightweight sport bike for spirited canyon rides, commuting, and entry-level track days rather than long-distance touring.
Rider Fit	Compact and light at 164kg dry with a manageable 785mm seat; sporty but not extreme riding posture with mild forward lean and small windscreen.
Character	Nimble, approachable, and revvy parallel-twin sportbike that punches above its 399cc for grins without intimidating newer riders.
Not Ideal For	Not for riders wanting big-bore highway punch, two-up touring range (tiny 3.7L tank), or any off-road use.

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

Rider Fit Visualizer

2021 Kawasaki Ninja 400 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 2021 Kawasaki Ninja 400, 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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Rider Reviews

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MotorcycleDB Review

The 2021 Kawasaki Ninja 400 motorcycle is a powerful and agile sports bike that delivers an exhilarating riding experience. With its 399cc parallel-twin engine, this bike boasts impressive performance and exceptional handling, making it a top choice for riders looking for a thrilling ride. The sleek and stylish design of the Ninja 400, combined with its advanced technology features, sets it apart from other bikes in its class. Whether you're a new rider or a seasoned motorcyclist, the Ninja 400 offers an impressive combination of power, precision, and style. Overall, the 2021 Kawasaki Ninja 400 motorcycle is a fantastic choice for anyone in the market for a high-performance sports bike. Its powerful engine, exceptional handling, and stylish design make it a standout option in its class. Whether you're hitting the open road or tackling twisty turns, the Ninja 400 is sure to provide an adrenaline-pumping experience for riders of all skill levels.