Kawasaki EX-4 (EX400B)

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Kawasaki EX-4

Kawasaki EX-4 sport-tourist bike was first introduced in 1994 as a successor to the outdated Kawasaki GPZ400S and as a domestic Japanese alternative to Kawasaki GPZ500S (EX500), differing only in engine size.

Main competitors:

Unlike the European version, which was in good demand, the domestic Japanese version did not gain popularity and already in 1995 left the assembly line, selling off the remnants of motorcycles until 1998. This fact was due to the fact that in Japan the concept of simple inexpensive motorcycles with an inline 2-cylinder engine was unusual for it, and therefore, for many years, models with "inline fours" were in high demand, having better dynamic characteristics and more similar to full-size ones, in particular sports, motorcycles (for example, Kawasaki ZZ-R400).

Kawasaki EX-4 was based on an in-line 2-cylinder liquid-cooled engine with a volume of 398 cc. see, giving out 50 hp. power and 35 Nm of torque. This engine was built on the basis of a 500 cc block installed on European versions, but with a reduced volume, which, in turn, has much in common with the engine from Kawasaki GPZ900R (in fact, the EX400 and EX500 engines are half of the motor from GPZ900).

Among other features of the Kawasaki EX-4, a rather simple layout should be distinguished in the form of a conventional steel frame, simple suspensions, disc brakes at the front and rear.

In 2010, the modern version Kawasaki Ninja 400R appears as the successor to the Kawasaki EX-4.


Specifications Kawasaki EX-4:

Model Kawasaki EX-4
Motorcycle type sports tourist
Release year 1994-1995 (1998)
Frame steel
Engine type 2-cylinder, 4-stroke, in-line
Working volume 398 cm³
Bore / Stroke 70.0 x 51.8mm
Compression ratio 10.7: 1
Cooling liquid
Number of valves per cylinder DOHC, 4 valves per cylinder
Fuel supply system Carburetor, 2x Keihin CVK34
Ignition type transistor
Maximum power 50 hp (36.8 kW) at 10,500 rpm
Maximum torque 35.3 nm (3.6 kgm) at 9000 rpm
Clutch Wet Multi-Disc, Cable Drive
Gearbox 6-speed
Drive type chain
Front tire size 110 / 70-17 54H
Rear tire size 130 / 70-17 62H
Front brakes 1 disc, 280 mm, 2-piston caliper
Rear brakes 1 disc, 230 mm, 1-piston caliper
Front suspension 37mm telescopic fork, 130mm travel
Rear suspension linkage with monoshock (Unitrak), stroke - 100 mm
Dimensions (L x W x H) 2085 x 710 x 1165 mm
Wheelbase 1435 mm
Saddle height 775 mm
Minimum ground clearance 125 mm
Maximum speed 170 km / h
Fuel tank capacity 18.0 l (including reserve - 2.2 l)
Motorcycle weight (dry) 177 kg
Motorcycle weight (curb) 198 kg

Fuel consumption

The officially declared fuel consumption of the Kawasaki EX-4 is 2.56 liters per 100 kilometers. The real consumption, according to the owners, is 4-6 liters per 100 km.