| Engine | Yamaha R6 | Kawasaki VULCAN 900 CLASSIC |
|---|---|---|
| Displacement | 599 cc | 903 cc |
| Max power | 123 hp (@14 500 RPM) | 50 hp (@5 700 RPM) |
| Max torque | 47 lb ft (@10 500 RPM) | 58 lb ft (@3 500 RPM) |
| Redline | 16 000 RPM | 9 500 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-4 | SOHC V-twin |
| Compression | 13.10:1 | 9.50:1 |
| Oil capacity | 3.22 quart | 3.50 quart |
| Oil type | 10W40, Yamalube 10W40, Shell Rotella 10W40 | 10W40 |
| Spark plug type | NGK CR10EK | NGK CPR7EA-9 |
| Cooling | Liquid | Liquid |
| Valves | 16 | 8 |
| Bore | 67.0 mm | 88.0 mm |
| Stroke | 42.5 mm | 74.0 mm |
| Throttle bore | 34.0 mm | |
| Weight to power | 3.39 lbs/hp | 12.39 lbs/hp |
| Power to weight | 737 hp/2500lbs | 201 hp/2500lbs |
| Battery type | YTZ10S |
| Gearbox | Yamaha R6 | Kawasaki VULCAN 900 CLASSIC |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Belt |
| Chain type | ||
| Gears count | 6 | 5 |
| Primary ratio | 2.073 | 2.184 |
| Final drive | 2.813 | 2.063 |
| 1. gear | 2.583 (78 mph) | 2.786 (56 mph) |
| 2. gear | 2.0 (101 mph) | 1.889 (83 mph) |
| 3. gear | 1.667 (121 mph) | 1.36 (115 mph) |
| 4. gear | 1.444 (140 mph) | 1.107 (141 mph) |
| 5. gear | 1.286 (157 mph) | 0.963 (162 mph) |
| 6. gear | 1.15 (176 mph) |
| Chasis | Yamaha R6 | Kawasaki VULCAN 900 CLASSIC |
|---|---|---|
| Frame type | Aluminium Deltabox | Steel cradle |
| Front susp. | USD, dia 41mm, 4.53 in travel | 41mm telescopic fork, 5.91 in travel |
| Rear susp. | 4.72 in travel | Monoshock |