| Engine | Honda CB650F | Honda CB400F |
|---|---|---|
| Displacement | 649 cc | 408 cc |
| Max power | 86 hp (@11 000 RPM) | 37 hp (@8 500 RPM) |
| Max torque | 46 lb ft (@8 000 RPM) | 24 lb ft (@7 500 RPM) |
| Redline | 11 200 RPM | 10 000 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Carburetor |
| Layout | DOHC Inline-4 | SOHC Inline-4 |
| Compression | 11.40:1 | 9.40:1 |
| Oil capacity | 2.74 quart | 3.31 quart |
| Oil type | SAE 10W-30 | |
| Spark plug type | CR9EH-9 | |
| Cooling | Liquid | Liquid |
| Valves | 16 | 8 |
| Bore | 67.0 mm | 51.0 mm |
| Stroke | 46.0 mm | 50.0 mm |
| Throttle bore | 32.0 mm | 20.0 mm |
| Weight to power | 5.33 lbs/hp | 10.61 lbs/hp |
| Power to weight | 468 hp/2500lbs | 235 hp/2500lbs |
| Battery type | YTZ10S 12V/8.6AH | 12V 12Ah |
| Gearbox | Honda CB650F | Honda CB400F |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | O ring #525, 118 links | |
| Gears count | 6 | 6 |
| Primary ratio | 1.69 | 3.423 |
| Final drive | 2.8 | 2.235 |
| 1. gear | 3.071 (57 mph) | 2.733 (35 mph) |
| 2. gear | 2.235 (78 mph) | 1.8 (54 mph) |
| 3. gear | 1.777 (98 mph) | 1.375 (71 mph) |
| 4. gear | 1.52 (115 mph) | 1.111 (88 mph) |
| 5. gear | 1.333 (131 mph) | 0.965 (101 mph) |
| 6. gear | 1.214 (143 mph) | 0.866 (112 mph) |
| Chasis | Honda CB650F | Honda CB400F |
|---|---|---|
| Frame type | Steel twin-spar | Tubular downtube cradle |
| Front susp. | 41mm fork, 4.72 in travel | Telescopic fork |
| Rear susp. | Monoshock, 43.0.20 in travel | Swingarm, two spring shocks |