| Engine | Yamaha R3 | Yamaha R125 |
|---|---|---|
| Displacement | 321 cc | 124 cc |
| Max power | 42 hp (@10 750 RPM) | 15 hp (@10 000 RPM) |
| Max torque | 21 lb ft (@9 000 RPM) | 8 lb ft (@8 000 RPM) |
| Redline | 12 245 RPM | 10 000 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-2 | SOHC Single |
| Compression | 11.20:1 | 11.20:1 |
| Oil capacity | 2.27 quart | 1.14 quart |
| Oil type | 10W40, Motul 300V 10W40, Shell Rotella 10W40 | |
| Spark plug type | NGK CR8E | |
| Cooling | Liquid | Liquid |
| Valves | 4 | 4 |
| Bore | 68.0 mm | 52.0 mm |
| Stroke | 44.1 mm | 58.6 mm |
| Weight to power | 8.71 lbs/hp | 20.87 lbs/hp |
| Power to weight | 286 hp/2500lbs | 119 hp/2500lbs |
| Battery type | 12V, 7.0 Ah, GTZ8V | 12V 5.5Ah |
| Gearbox | Yamaha R3 | Yamaha R125 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | ||
| Gears count | 6 | 6 |
| Primary ratio | 3.043 | 3.042 |
| Final drive | 3.071 | 3.42 |
| 1. gear | 2.5 (39 mph) | 2.833 (24 mph) |
| 2. gear | 1.824 (53 mph) | 1.875 (37 mph) |
| 3. gear | 1.348 (71 mph) | 1.364 (51 mph) |
| 4. gear | 1.087 (89 mph) | 1.143 (60 mph) |
| 5. gear | 0.92 (105 mph) | 0.957 (72 mph) |
| 6. gear | 0.8 (120 mph) | 0.84 (82 mph) |
| Chasis | Yamaha R3 | Yamaha R125 |
|---|---|---|
| Frame type | Diamond | Steel deltabox |
| Front susp. | Telescopic fork, coil spring, oil damper, 130 mm travel | KYB 41mm USD, 5.12 in travel |
| Rear susp. | Swingarm, spring/shock absorber, coil spring/oil damper, 130 mm travel | Swingarm monoshock, 4.49 in travel |