| Engine | Yamaha WR450F | Yamaha SCR950 |
|---|---|---|
| Displacement | 449 cc | 942 cc |
| Max power | 50 hp (@8 500 RPM) | 51 hp (@5 500 RPM) |
| Max torque | 36 lb ft (@7 500 RPM) | 58 lb ft (@3 000 RPM) |
| Redline | 11 500 RPM | 6 000 RPM |
| Idling speed | 1 900 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Single | SOHC V-twin |
| Compression | 12.30:1 | 9.00:1 |
| Oil capacity | 0.95 quart | 4.07 quart |
| Oil type | 10W40 | |
| Spark plug type | NGK CR8E | |
| Cooling | Liquid | Air |
| Valves | 5 | 8 |
| Bore | 95.0 mm | 85.0 mm |
| Stroke | 63.4 mm | 83.0 mm |
| Throttle bore | 42.0 mm | 35.0 mm |
| Weight to power | 5.47 lbs/hp | 10.72 lbs/hp |
| Power to weight | 457 hp/2500lbs | 233 hp/2500lbs |
| Battery type | 12V 6Ah, YTZ7S (F) |
| Gearbox | Yamaha WR450F | Yamaha SCR950 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Belt |
| Chain type | DAIDO 520VM2 114 links | |
| Gears count | 5 | 5 |
| Primary ratio | 2.652 | 1.674 |
| Final drive | 3.846 | 2.332 |
| 1. gear | 2.417 (37 mph) | 3.067 (39 mph) |
| 2. gear | 1.733 (52 mph) | 2.06 (57 mph) |
| 3. gear | 1.313 (68 mph) | 1.579 (75 mph) |
| 4. gear | 1.05 (84 mph) | 1.259 (94 mph) |
| 5. gear | 0.84 (106 mph) | 1.042 (113 mph) |
| Chasis | Yamaha WR450F | Yamaha SCR950 |
|---|---|---|
| Frame type | Bilateral beam aluminum | Double cradle steel |
| Front susp. | 48mm USD, 11.81 in travel | 41mm Telescopic fork, 4.72 in travel |
| Rear susp. | Swingarm monoshock, 11.57 in travel | Dual shocks, 2.83 in travel |