The Honda CB 400N motorcycle specifications include a 400 cc (24.41 cu in) engine, power of 42.9 hp (31.3 kW) @ 9,500 rpm, and a listed weight of 167 kg (368.2 lb).
Key specifications
How the Honda CB 400N compares
This compares the motorcycle with all Honda models in this specifications database. The blue marker is this model and the grey line is the Honda database average.
About 21% lower than the Honda database average. Around the 45th percentile across Honda models.
About 29% lower than the Honda database average. Around the 44th percentile across Honda models.
Very close to the Honda database average. Around the 62nd percentile across Honda models.
Very close to the Honda database average. Around the 56th percentile across Honda models.
Honda database percentile rankings
Percentiles show where this motorcycle sits across the Honda specifications database. They are descriptive database rankings, not performance ratings.
42.9 hp — more powerful than about 45% of Honda models with power data.
400 cc — larger displacement than about 44% of Honda models.
795 mm — taller than about 62% of Honda models.
14 L — larger than about 56% of Honda fuel tanks in this database.
Dimensions compared with Honda average
Each measurement is compared with the average value across Honda models where that dimension is available.
2,115
2,078
Close to average.
730
827
12% below average.
1,105
1,161
5% below average.
1,390
1,431
Close to average.
795
780
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 3.60-19 |
|---|---|
| Rear tire size | 4.10-18 |
| Power-to-weight ratio | 0.257 hp/kg |
| Power-to-weight | 256.9 hp/tonne |
| Specific power | 107.2 hp/L |
| Bore/stroke ratio | 1.39:1 (Oversquare) |
Model information
| Year released | 1978 |
|---|---|
| Category | Allround |
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 400 cc (24.41 cu in) |
| Power | 42.9 hp (31.3 kW) @ 9,500 rpm |
| Torque | 33.2 Nm (3.4 kgf-m or 24.5 ft.lbs) @ 8,000 rpm |
| Bore × stroke | 70.5 x 50.6 mm (2.8 x 2.0 inches) |
| Compression ratio | 9.4:1 |
| Cooling system | Air |
| Fuel system | Carburettor. Keihin 32mm |
| Ignition | Electronic |
| Starter | Electric & kick |
Chassis and suspension
| Front suspension | Telescopic fork |
|---|---|
| Rear suspension | Swingarm Twin Shock |
Brakes, wheels and tires
| Front brakes | Double disc |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 3.60-19 |
| Rear tire | 4.10-18 |
Dimensions and weight
| Dry weight | 167 kg (368.2 lb) |
|---|---|
| Seat height | 795 mm (31.3 inches) |
| Overall length | 2,115 mm (83.3 inches) |
| Overall width | 730 mm (28.7 inches) |
| Overall height | 1,105 mm (43.5 inches) |
| Wheelbase | 1,390 mm (54.7 inches) |
Fuel and emissions
| Fuel capacity | 14.00 L (3.70 US gal) |
|---|
Performance
| Top speed | 166.5 km/h (103.4 mph) |
|---|---|
| Power/weight ratio | 0.2569 hp/kg |
Other specifications
| Color options | Red, Blue |
|---|
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 Honda models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Honda information before relying on them. Visit the official Honda website.