| Engine | Yamaha R125 | Yamaha R6 |
|---|---|---|
| Displacement | 124 cc | 599 cc |
| Max power | 15 hp (@10 000 RPM) | 123 hp (@14 500 RPM) |
| Max torque | 8 lb ft (@8 000 RPM) | 47 lb ft (@10 500 RPM) |
| Redline | 10 000 RPM | 16 000 RPM |
| Idling speed | 1 200 RPM | 1 200 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | SOHC Single | DOHC Inline-4 |
| Compression | 11.20:1 | 13.10:1 |
| Oil capacity | 1.14 quart | 3.22 quart |
| Oil type | 10W40, Yamalube 10W40, Shell Rotella 10W40 | |
| Spark plug type | NGK CR10EK | |
| Cooling | Liquid | Liquid |
| Valves | 4 | 16 |
| Bore | 52.0 mm | 67.0 mm |
| Stroke | 58.6 mm | 42.5 mm |
| Weight to power | 20.87 lbs/hp | 3.39 lbs/hp |
| Power to weight | 119 hp/2500lbs | 737 hp/2500lbs |
| Battery type | 12V 5.5Ah | YTZ10S |
| Gearbox | Yamaha R125 | Yamaha R6 |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | ||
| Gears count | 6 | 6 |
| Primary ratio | 3.042 | 2.073 |
| Final drive | 3.42 | 2.813 |
| 1. gear | 2.833 (24 mph) | 2.583 (78 mph) |
| 2. gear | 1.875 (37 mph) | 2.0 (101 mph) |
| 3. gear | 1.364 (51 mph) | 1.667 (121 mph) |
| 4. gear | 1.143 (60 mph) | 1.444 (140 mph) |
| 5. gear | 0.957 (72 mph) | 1.286 (157 mph) |
| 6. gear | 0.84 (82 mph) | 1.15 (176 mph) |
| Chasis | Yamaha R125 | Yamaha R6 |
|---|---|---|
| Frame type | Steel deltabox | Aluminium Deltabox |
| Front susp. | KYB 41mm USD, 5.12 in travel | USD, dia 41mm, 4.53 in travel |
| Rear susp. | Swingarm monoshock, 4.49 in travel | 4.72 in travel |