| Engine | Yamaha R1 | Yamaha R125 |
|---|---|---|
| Displacement | 998 cc | 124 cc |
| Max power | 152 hp (@10 500 RPM) | 15 hp (@10 000 RPM) |
| Max torque | 104 Nm (@8 500 RPM) | 11 Nm (@8 000 RPM) |
| Redline | 11 750 RPM | 10 000 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | DOHC Inline-4 | SOHC Single |
| Compression | 11.80:1 | 11.20:1 |
| Oil capacity | 1.20 litre | |
| Cooling | Liquid | Liquid |
| Valves | 20 | 4 |
| Bore | 74.0 mm | 52.0 mm |
| Stroke | 58.0 mm | 58.6 mm |
| Throttle bore | 40.0 mm | |
| Weight to power | 1.27 kg/hp | 9.47 kg/hp |
| Power to weight | 787 hp/Ton | 105 hp/Ton |
| Battery type | 12V 5.5Ah |
| Gearbox | Yamaha R1 | Yamaha R125 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | 530 O-ring | |
| Gears count | 6 | 6 |
| Primary ratio | 1.581 | 3.042 |
| Final drive | 2.685 | 3.42 |
| 1. gear | 2.5 (130 km/h) | 2.833 (39 km/h) |
| 2. gear | 1.842 (176 km/h) | 1.875 (59 km/h) |
| 3. gear | 1.5 (216 km/h) | 1.364 (82 km/h) |
| 4. gear | 1.333 (243 km/h) | 1.143 (97 km/h) |
| 5. gear | 1.2 (270 km/h) | 0.957 (116 km/h) |
| 6. gear | 1.115 (291 km/h) | 0.84 (132 km/h) |
| Chasis | Yamaha R1 | Yamaha R125 |
|---|---|---|
| Frame type | Twin-spar aluminium | Steel deltabox |
| Front susp. | 43mm USD, 120.00 mm travel | KYB 41mm USD, 130.00 mm travel |
| Rear susp. | Swingarm monoshock, 130.00 mm travel | Swingarm monoshock, 114.00 mm travel |