Naked Motorcycles
2021Kawasaki Z400
48 fields on record
The 2021 Kawasaki Z400 is an agile naked bike perfectly suited for beginner and intermediate riders seeking an accessible entry point into motorcycling. Powered by a 399cc parallel-twin engine producing 45 horsepower, it delivers nimble handling and manageable performance ideal for learning fundamental riding skills. Known for its lightweight chassis, affordability, and modern styling, the Z400 excels in urban commuting and casual weekend riding.
- Capacity
- 399.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 165.0 kg
- Seat height
- 785 mm
- Power
- 45.0 HP (32.8 kW) @ 10000 RPM
What’s new for the 2021 Kawasaki Z400
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Wet weight | 167.0 kg (368.2 pounds) | 165.0 kg (363.8 pounds) |
| Front brakes | Single disc | Single disc. Optional ABS |
| Rear brakes | Single disc | Single disc. Optional ABS |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A lightweight middleweight naked built for commuting, city hopping and spirited weekend backroad rides, with enough legs for occasional short highway trips.
- Built for
- 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.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the published US (EPA-style) fuel economy estimate and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 399.0 ccm
- Power
- 45.0 HP (32.8 kW) @ 10000 RPM
- CO2 Emissions
- 81 CO2 g/km
- EPA Certificate No.
- MKAXC.399AAB-011
- EPA Est. Fuel Consumption
- 3.45 L/100km (68.2 US mpg)
- EPA CO Emissions
- 3.6 CO g/km
- Torque
- 38.0 Nm (3.9 kgf-m) @ 8000 RPM
- Engine type
- Parallel Twin, four-stroke
- Power/weight ratio
- 0.2727 HP/kg (wet)
- Bore x stroke
- 70.0 x 51.8 mm
- Compression
- 11.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- TCBI with digital advance
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 4
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Assist and slipper Clutch
Dimensions & weight
- Wheelbase
- 1369 mm
- Overall length
- 1989 mm
- Overall width
- 800 mm
- Overall height
- 1054 mm
- Seat height
- 785 mm
- Wet weight
- 165.0 kg
- Fuel capacity
- 14.00 litres
- Ground clearance
- 145 mm
- Oil capacity
- 2.00 litres
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Trellis, high-tensile steel
- Front suspension
- Telescopic fork
- Rear suspension
- Uni-Trak® swingarm
- Front wheel travel
- 119 mm
- Rear wheel travel
- 130 mm
- Rake (fork angle)
- 24.5°
- Trail
- 91 mm
Brakes & wheels
- Front brakes
- Single disc. Optional ABS
- Front brakes diameter
- 310 mm
- Rear brakes
- Single disc. Optional ABS
- ABS
- Optional
- Front tyre
- 110/70-17M
- Rear tyre
- 150/60-17M
Other
- Color options
- Pearl Nightshade Teal/Metallic Flat Spark Black, Candy Cardinal Red/Metallic Flat Spark Black
- Warranty
- 12
- Comments
- Economical Riding Indicator.
- Fuel Tank Material
- Metal
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2020 | 2021 | 2022 | 2024 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc | 399 cc |
| Seat height | 785 mm | 785 mm | 785 mm | 785 mm | 785 mm | 785 mm |
| Fuel capacity | 14 L | 14 L | 14 L | 14 L | 14 L | 14 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Kawasaki Z400?
The 2021 Kawasaki Z400 has a Capacity of 399.0 ccm (24.35 cubic inches).
What engine power does the Kawasaki Z400 have?
The 2021 Kawasaki Z400 has a Power of 45.0 HP (32.8 kW) @ 10000 RPM.
How many gears does the Kawasaki Z400 have?
The 2021 Kawasaki Z400 has a Gearbox of 6-speed.
What is the torque of the Kawasaki Z400?
The 2021 Kawasaki Z400 has a Torque of 38.0 Nm (3.9 kgf-m or 28.0 ft.lbs) @ 8000 RPM.
How much does the Kawasaki Z400 weigh?
The 2021 Kawasaki Z400 has a Wet weight of 165.0 kg (363.8 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
The 2021 Kawasaki Z400 is a powerful and stylish motorcycle that offers an exhilarating riding experience. With its 399cc parallel-twin engine, the Z400 delivers impressive performance and smooth acceleration. The lightweight chassis and agile handling make it a joy to ride, whether you're navigating city streets or tackling winding roads. The modern design, including a sharp, sporty look and a comfortable seating position, adds to the overall appeal of this bike. Whether you're a beginner or a seasoned rider, the Kawasaki Z400 is a fantastic choice for anyone looking for a thrilling and versatile ride.
Overall, the 2021 Kawasaki Z400 is a top-notch motorcycle that offers an excellent balance of power, performance, and style. With its impressive engine, nimble handling, and attractive design, the Z400 is a standout choice in the mid-size motorcycle segment. Whether you're a commuter, a weekend rider, or a motorcycle enthusiast, the Z400 offers a winning combination of excitement, comfort, and versatility. If you're in the market for a new motorcycle, the 2021 Kawasaki Z400 is definitely worth considering for its exceptional performance and sleek design.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.