The Honda CB 450 S (reduced effect) motorcycle specifications include a 447 cc (27.28 cu in) engine, power of 27 hp (19.7 kW) @ 7,000 rpm, a 6-speed gearbox, and a listed weight of 185 kg (407.9 lb).
Key specifications
Year-specific specification changes
How the Honda CB 450 S (reduced effect) 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 50% lower than the Honda database average. Around the 38th percentile across Honda models.
About 21% lower than the Honda database average. Around the 46th percentile across Honda models.
About 6% lighter than the Honda database average. Around the 44th percentile across Honda models.
About 34% larger than the Honda database average. Around the 78th 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.
27 hp — more powerful than about 38% of Honda models with power data.
447 cc — larger displacement than about 46% of Honda models.
185 kg — heavier than about 44% of Honda models, or lighter than about 56%.
18 L — larger than about 78% of Honda fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 100/90-18 |
|---|---|
| Rear tire size | 110/90-18 |
| Front tire width | 100 mm |
| Front tire aspect ratio | 90% |
| Front rim diameter | 18 in |
| Rear tire width | 110 mm |
| Rear tire aspect ratio | 90% |
| Rear rim diameter | 18 in |
| Power-to-weight ratio | 0.146 hp/kg |
| Power-to-weight | 145.9 hp/tonne |
| Specific power | 60.4 hp/L |
| Bore/stroke ratio | 1.48:1 (Oversquare) |
Engine specifications
| Engine type | Twin, four-stroke |
|---|---|
| Displacement | 447 cc (27.28 cu in) |
| Power | 27 hp (19.7 kW) @ 7,000 rpm |
| 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 control | Overhead Cams (OHC) |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
Brakes, wheels and tires
| Front brakes | Dual disc |
|---|---|
| Rear brakes | Expanding brake |
| Front tire | 100/90-18 |
| Rear tire | 110/90-18 |
Dimensions and weight
| Wet weight | 185 kg (407.9 lb) |
|---|
Fuel and emissions
| Fuel capacity | 18.00 L (4.76 US gal) |
|---|
Performance
| Top speed | 141.0 km/h (87.6 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 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.