Class-leading Power
The four-stroke, 399cc twin-cylinder is the largest displacement engine in its class and delivers smooth easy-to-use power for maximum rider confidence while also offering outstanding fuel efficiency.
The Ninja 400 offers the largest displacement in its category at 399cc with the sophistication of twin-cylinder power. Approachable power, superb ergonomics and class-leading performance offer a smooth, manageable ride that’s ideal for new riders while also alluring experienced riders. A low seat height and aggressive styling with LED headlights make the Ninja 400 the ideal choice for riders looking to enter the sport-riding scene.
Next-level Power
The Ninja 400 motorcycle engine delivers the perfect balance of high-performance thrills and easy-to-use power.
Assist & Slipper Technology
The assist function provides an exceptionally light clutch pull and produces a wide clutch engagement range for comfort and confidence. The slipper function reduces the effect of back-torque for smooth and seamless downshifts. 2020 model shown.
Confident Acceleration
Best in class roll-on acceleration to confidently accelerate up to speed. 2020 model shown.
Nimble & Agile
The Ninja 400 motorcycle’s chassis dimensions were designed to deliver confident handling with a modern sporty feel at all speeds.
Lightweight & Agile
Similar in design to the unprecedented Ninja H2™ hypersport bike, the tube-type trellis frame is light in weight for smooth control and handling.
Progressive & dependable
The class leading semi-floating front disc brake delivers strong, progressive braking performance and is complemented by an Anti-lock Brake System (ABS)* that helps reduce wheel lock-up under certain conditions. *Model available in ABS and Non-ABS
Designed for Comfort
A sporty yet relaxed riding position accommodates a wide variety of riders and riding situations.
Sporty & Comfortable
Clip-on style handlebars offer a raised position for added comfort. 2020 model shown.
Easy & Accessible
A narrow seat design and low 30.9” seat height allows the rider to confidently reach the ground and creates a lower center of gravity for confident handling. 2020 model shown.
Added Comfort
Forward-oriented footpeg position contributes to comfortable ergonomics and a confident reach to the ground at stops.
Sharp & Modern
Aggressive Ninja styling boasts high-class modern design with superb fit and finish inspired by the larger displacement Ninja supersport bikes.
High-tech
The high-grade cockpit of the Ninja 400 motorcycle features a multi-function dash meter that includes a gear position indicator.
Excellent Visibility
Twin LED headlights produce strong white lighting and include low and high beams as well as position lamps.
POWER
Maximum Power
33.4 kW {45 PS} / 10,000 rpm
Maximum Torque
38.0 N.m {3.9 kgf.m} / 8,000 rpm
Engine
4-stroke Parallel Twin
Displacement
399 cm3
Bore x Stroke
70.0 × 51.8 mm
Compression Ratio
11.5:1
Valve System
DOHC, 8 valves
Fuel System
Fuel injection: o32 mm x 2
Ignition
Digital
Starting
Electric
Cooling
Liquid-cooled
Lubrication
Forced lubrication, wet sump
Transmission
6-speed, return
Primary Reduction Ratio
2.219 (71/32)
Gear Ratio: 1st
2.928 (41/14)
Gear Ratio: 2nd
2.055 (37/18)
Gear Ratio: 3rd
1.619 (34/21)
Gear Ratio: 4th
1.333 (32/24)
Gear Ratio: 5th
1.154 (30/26)
Gear Ratio: 6th
1.037 (28/27)
Final Reduction Ratio
2.929 (41/14)
Clutch
Wet multi-disc, manual
Final Drive
Chain
Frame
Trellis, high-tensile steel
Front Suspension
o41 mm telescopic fork
Rear Suspension
Bottom-Link Uni-Trak, gas-charged shock with adjustable preload
Front Wheel Travel
120mm
Rear Wheel Travel
130mm
Rake
24.7?
Trail
92mm
Steering Angle (L/R)
35? / 35?
Front Tyre
110/70R17 M/C 54H
Rear Tyre
150/60R17 M/C 66H
Front Brake/s
Single semi-floating o310 mm petal disc
Front Caliper/s
Single balanced actuation dual-piston
Rear Brake
Single o220 mm petal disc
Rear Caliper
Single-piston
Dimensions (LxWxH)
1990 × 710 × 1120mm
Overall Length
1990mm
Overall Width
710
Overall Height
1120
Wheelbase
1370
Road Clearance
140
Seat Height
785
Curb Mass
168 kg
Fuel Capacity
14L