| Engine | Yamaha R6 | Yamaha WR250R |
|---|---|---|
| Displacement | 600 cc | 250 cc |
| Max power | 121 hp (@13 000 RPM) | 30 hp (@10 000 RPM) |
| Max torque | 44 lb ft (@12 000 RPM) | 16 lb ft (@8 000 RPM) |
| Redline | 15 500 RPM | 11 500 RPM |
| Idling speed | 1 200 RPM | |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-4 | DOHC Single |
| Compression | 12.40:1 | 11.80:1 |
| Oil capacity | 3.22 quart | 1.33 quart |
| Oil type | 10W40, Motul 300V 10W40, Shell Rotella 10W40 | 10W30, 10W40, YAMALUBE 10W40 |
| Spark plug type | NGK CR9EK, NGK CR10EK | NGK CR9EK |
| Cooling | Liquid | Liquid |
| Valves | 16 | 4 |
| Bore | 65.5 mm | 77.0 mm |
| Stroke | 44.5 mm | 53.6 mm |
| Throttle bore | 38.0 mm | |
| Weight to power | 3.32 lbs/hp | |
| Power to weight | 753 hp/2500lbs | |
| Battery type | 12 V 8 Ah, GT9B-4 | YTZ7S, 12V 6Ah |
| Gearbox | Yamaha R6 | Yamaha WR250R |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | ||
| Gears count | 6 | 6 |
| Primary ratio | 1.955 | 3.12 |
| Final drive | 3.0 | 3.231 |
| 1. gear | 2.846 (68 mph) | 2.642 (33 mph) |
| 2. gear | 1.947 (100 mph) | 1.813 (48 mph) |
| 3. gear | 1.556 (125 mph) | 1.318 (66 mph) |
| 4. gear | 1.333 (146 mph) | 1.04 (83 mph) |
| 5. gear | 1.19 (164 mph) | 0.888 (97 mph) |
| 6. gear | 1.083 (180 mph) | 0.766 (113 mph) |
| Chasis | Yamaha R6 | Yamaha WR250R |
|---|---|---|
| Frame type | Diamond | Semi double cradle |
| Front susp. | Telescopic fork USD, 4.72 in travel | USD, 10.63 in travel |
| Rear susp. | Swingarm link, spring/gas-oil damper | Swingarm monoshock, 10.43 in travel |