| Engine | Yamaha R125 | Yamaha R1 |
|---|---|---|
| Displacement | 124 cc | 998 cc |
| Max power | 15 hp (@10 000 RPM) | 182 hp (@12 500 RPM) |
| Max torque | 8 lb ft (@8 000 RPM) | 84 lb ft (@10 000 RPM) |
| Redline | 10 000 RPM | 13 750 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | SOHC Single | DOHC Inline-4 |
| Compression | 11.20:1 | 12.70:1 |
| Oil capacity | 1.14 quart | 3.69 quart |
| Oil type | YAMALUBE 4, 10W-40, 20W-50 | |
| Spark plug type | NGK LMAR9E-J | |
| Cooling | Liquid | Liquid |
| Valves | 4 | 16 |
| Bore | 52.0 mm | 78.0 mm |
| Stroke | 58.6 mm | 52.2 mm |
| Weight to power | 20.87 lbs/hp | 2.50 lbs/hp |
| Power to weight | 119 hp/2500lbs | 1001 hp/2500lbs |
| Battery type | 12V 5.5Ah | 12V 8.6Ah, YTZ10S |
| Gearbox | Yamaha R125 | Yamaha R1 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | ||
| Gears count | 6 | 6 |
| Primary ratio | 3.042 | 1.512 |
| Final drive | 3.42 | 2.765 |
| 1. gear | 2.833 (24 mph) | 2.533 (97 mph) |
| 2. gear | 1.875 (37 mph) | 2.063 (120 mph) |
| 3. gear | 1.364 (51 mph) | 1.762 (140 mph) |
| 4. gear | 1.143 (60 mph) | 1.522 (162 mph) |
| 5. gear | 0.957 (72 mph) | 1.364 (181 mph) |
| 6. gear | 0.84 (82 mph) | 1.269 (194 mph) |
| Chasis | Yamaha R125 | Yamaha R1 |
|---|---|---|
| Frame type | Steel deltabox | Diamond |
| Front susp. | KYB 41mm USD, 5.12 in travel | 43mm USD, 4.72 in travel |
| Rear susp. | Swingarm monoshock, 4.49 in travel | Monoshock, 4.72 in travel |