A compact, refined super sports car that inherits tradition
The Ninja ZX-4R SE is a supersport model equipped with a 400cc inline four-cylinder engine, a 399 cm³ water-cooled, four-stroke inline four that pumps out a maximum output of 57 kW (77 PS) at 14,500 rpm. Its pleasant engine sound at high revs excites the rider, while the easy-to-use torque at low and mid-revs also makes it suitable for a wide range of riding styles, from city riding to circuit racing. Kawasaki’s punchy engine design philosophy is clearly evident in this model, and its character inherits the lineage of higher-end models such as the ZX-10R.
The tight, lightweight body provides agile control
The chassis features a lightweight and compact frame, and is equipped with dual disc brakes at the front and high-performance suspension at the rear, resulting in sharp handling. Specifically, the front is equipped with Showa’s SFF-BP inverted forks, and the rear is equipped with a horizontal back-link suspension, achieving both responsive handling and a high sense of road contact. In addition, the vehicle weighs 189 kg for the SE model (188 kg for the base and RR models), and the fuel tank capacity is 15 L, resulting in a design that balances lightness and long range.
Standard equipment provides modern convenience and comfort
The ZX-4R SE is not just great looking, it’s also packed with great equipment. It’s equipped with a TFT color LCD display and an integrated riding mode that combines traction control and power mode, allowing you to switch settings according to your riding style and road conditions. It also comes standard with a smoked windshield, frame sliders, and a USB power socket, making it easy to handle for a first-time supersport rider, while offering a package that will satisfy even veteran riders.
In addition, smartphone connectivity has been enhanced, and the voice command and navigation functions of “RIDEOLOGY THE APP” are provided as a paid license, but new car buyers can also use the service free of charge for one year by using a QR code provided at the time of delivery. It has the convenience to meet the expectations of modern riders.
The new color scheme will be released on September 1, 2025.
The ZX-4R SE will be released on September 1, 2025, with new colors and graphics. It comes in two color variations: Pearl Robotic White x Metallic Spark Black and Metallic Matte Graphene Steel Gray x Metallic Spark Black, both of which give off a bold and sophisticated impression. The manufacturer’s suggested retail price is 1,177,000 yen (tax included), making it an attractive price range.
The ZX-4R SE is a highly refined bike that combines the performance and ease of handling of a 400cc supersport with modern equipment. While inheriting the DNA of its higher-end models, it stands out as a model that can be used on both the street and the circuit thanks to its lightweight body, high output, and comfortable equipment. It is a model that will appeal to a wide range of users, regardless of their riding style. Attention is only growing as the new model is launched on September 1, 2025.
Main specifications
Maximum power output 57kW (77PS) / 14,500rpm
Maximum power (with ram air pressure) 59kW (80PS) / 14,500rpm
Maximum torque 39N･m (4.0kgf･m) / 13,000rpm
Engine type Water-cooled 4-stroke in-line 4-cylinder
Displacement 399cm³
Bore x stroke 57.0mm x 39.1mm
Compression ratio 12.3:1
Valve type DOHC 4-valve
Fuel supply system Fuel injection (ø34mm x 4)
Ignition system Battery & coil (full transistor ignition)
Starting system Electric starter
Lubrication system Forced lubrication / wet sump
Engine oil capacity 3.0L
Transmission type Constant engagement 6-speed return
Primary reduction ratio 2.029 (69/34)
Gear ratio 1st gear 2.928 (41/14)
Gear ratio 2nd gear 2.055 (37/18)
Gear Ratio 3rd Gear 1.619 (34/21)
Gear Ratio 4th Gear 1.333 (32/24)
Gear Ratio 5th Gear 1.153 (30/26)
Gear Ratio 6th Gear 1.037 (28/27)
Secondary Reduction Ratio 3.428 (48/14)
Clutch Type Wet Multi-Plate / Manual Transmission
Power Transmission Method Chain
Frame Type Trellis (High Tensile Steel)
Suspension Type (Front) Telescopic (Inner Tube Diameter 37mm Inverted, SFF-BP, Compression and Rebound Damping, Spring Preload Adjustable)
Suspension Type (Rear) Swing Arm (Horizontal Back Link, Spring Preload Adjustable)
Wheel Travel (Front) 120mm
Wheel Travel (Rear) 112mm
Caster 23.5°
Trail 97mm
Steering Angle (Left/Right) 35° / 35°
Tire Size Front: 120/70ZR17M/C (58W)
Tire size: Rear: 160/60ZR17M/C (69W)
Brake type: Front: Dual semi-floating disc (outer diameter 290mm)
Caliper: Front: Radial-mount monoblock opposed 4-piston
Brake type: Rear: Single disc (outer diameter 220mm)
Caliper: Single piston
Length x Width x Height: 1,990mm x 765mm x 1,110mm
Wheelbase: 1,380mm
Ground clearance: 135mm
Seat height: 800mm
Vehicle weight: 190kg
Fuel tank capacity: 15L
Fuel: Unleaded regular gasoline
Fuel consumption rate (Ministry of Land, Infrastructure, Transport and Tourism reported value): 24.4km/L (60km/h, constant speed fuel consumption value, two occupants)
Fuel consumption rate (WMTC mode value): 20.4km/L (Class 3-2, 1 occupant)
Minimum turning radius: 2.6m
Passenger capacity: 2 people
Country of origin: Thailand
Model: 8BL-ZX400P
Manufacturer’s warranty: 2 years
Release date: September 1, 2025
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