The Kawasaki Z400 B motorcycle specifications include a 399 cc (24.35 cu in) engine, a 6-speed gearbox, and a listed weight of 187 kg (412.3 lb).
Key specifications
The 1978 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Kawasaki Z400 B compares
This compares the motorcycle with all Kawasaki models in this specifications database. The blue marker is this model and the grey line is the Kawasaki database average.
About 42% lower than the Kawasaki database average. Around the 32nd percentile across Kawasaki models.
About 10% lighter than the Kawasaki database average. Around the 33rd percentile across Kawasaki models.
About 8% smaller than the Kawasaki database average. Around the 37th percentile across Kawasaki models.
Kawasaki database percentile rankings
Percentiles show where this motorcycle sits across the Kawasaki specifications database. They are descriptive database rankings, not performance ratings.
399 cc — larger displacement than about 32% of Kawasaki models.
187 kg — heavier than about 33% of Kawasaki models, or lighter than about 67%.
14 L — larger than about 37% of Kawasaki fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 3.00-18 |
|---|---|
| Rear tire size | 3.50-18 |
| Bore/stroke ratio | 1.03:1 (Oversquare) |
Model information
| Category | Touring |
|---|
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 399 cc (24.35 cu in) |
| Bore × stroke | 64.0 x 62 mm (2.5 x 2.4 inches) |
| Compression ratio | 9.5:1 |
| Valves per cylinder | 2 |
| Cooling system | Air |
| Fuel control | Overhead Cams (OHC) |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 3.00-18 |
| Rear tire | 3.50-18 |
Dimensions and weight
| Wet weight | 187 kg (412.3 lb) |
|---|
Fuel and emissions
| Fuel capacity | 14.00 L (3.70 US gal) |
|---|
Performance
| Top speed | 146.0 km/h (90.7 mph) |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Kawasaki models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Kawasaki information before relying on them. Visit the official Kawasaki website.