The Honda CM 450 Custom motorcycle specifications include a 447 cc (27.28 cu in) engine and a listed weight of 174 kg (383.6 lb).
Key specifications
How the Honda CM 450 Custom 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 46th percentile across Honda models.
Very close to the Honda database average. Around the 49th 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.
447 cc — larger displacement than about 46% of Honda models.
13 L — larger than about 49% 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.
2,145
2,078
3% above average.
855
827
3% above average.
1,180
1,161
Close to average.
1,450
1,431
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 3.50-18 |
|---|---|
| Rear tire size | 4.60-16 |
| Engine oil | Honda GN4 10W-40 |
| Oil filter | K&N KN-401 |
| Chain size | 530 |
| Estimated theoretical fuel range | 332 km |
| Bore/stroke ratio | 1.48:1 (Oversquare) |
Model information
| Year released | 1982 |
|---|
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 447 cc (27.28 cu in) |
| Bore × stroke | 75.0 x 50.6 mm (3.0 x 2.0 inches) |
| Compression ratio | 9.1:1 |
| Valves per cylinder | 3 |
| Cooling system | Air |
| Fuel system | Carburettor |
| Fuel control | Overhead Cams (OHC) |
| Ignition | CDI |
| Starter | Electric |
| Engine oil | Honda GN4 10W-40 |
| Oil filter | K&N KN-401 |
Transmission and drivetrain
| Final drive | Chain (final drive) |
|---|---|
| Chain size | 530 |
Chassis and suspension
| Front suspension | Telehydraulic forks |
|---|---|
| Rear suspension | Adjustable telehydraulic shocks |
| Rake | 31.0° |
| Trail | 114 mm (4.5 inches) |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Expanding brake (drum brake) |
| Front tire | 3.50-18 |
| Rear tire | 4.60-16 |
Dimensions and weight
| Dry weight | 174 kg (383.6 lb) |
|---|---|
| Overall length | 2,145 mm (84.4 inches) |
| Overall width | 855 mm (33.7 inches) |
| Overall height | 1,180 mm (46.5 inches) |
| Wheelbase | 1,450 mm (57.1 inches) |
Fuel and emissions
| Fuel capacity | 13.00 L (3.43 US gal) |
|---|---|
| Reserve fuel capacity | 2.00 L (0.53 US gal) |
| Fuel consumption | 3.92 L/100 km (25.5 km/l or 60.01 mpg) |
| Greenhouse gases | 90.9 CO 2 g/km. (CO2 – Carbon dioxide emission) |
Performance
| Top speed | 144.8 km/h (90.0 mph) |
|---|---|
| 1/4 mile | 13.70 seconds |
| Power/weight ratio | 0.2644 hp/kg |
Electrical and instruments
| Battery | YB12A-A |
|---|
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.