| Engine | Yamaha YBR 125 | Yamaha FZ6-ST |
|---|---|---|
| Engine code | 5VX8 | |
| Displacement | 125 cc | 600 cc |
| Max power | 10 hp (@7 800 RPM) | 98 hp (@12 000 RPM) |
| Max torque | 6 lb ft (@6 000 RPM) | 46 lb ft (@10 000 RPM) |
| Redline | 10 000 RPM | 14 000 RPM |
| Idling speed | 1 250 RPM | 1 250 RPM |
| Management | Fuel Injection | Fuel Injection |
| Layout | SOHC Single | DOHC Inline-4 |
| Compression | 10.00:1 | 12.20:1 |
| Oil capacity | 1.14 quart | 2.37 quart |
| Oil type | 10W30, 10W40 | 10W40, Yamalube 10W40, Shell Rotella 10W40 |
| Spark plug type | NGK CR6HSA | NGK CR9EK |
| Cooling | Air | Liquid |
| Valves | 2 | 16 |
| Bore | 54.0 mm | 65.5 mm |
| Stroke | 54.0 mm | 44.5 mm |
| Weight to power | 28.66 lbs/hp | 4.66 lbs/hp |
| Power to weight | 87 hp/2500lbs | 536 hp/2500lbs |
| Battery type | YTX7L-BS, 12V 6Ah | YT12B-BS |
| Gearbox | Yamaha YBR 125 | Yamaha FZ6-ST |
|---|---|---|
| Type | Sequential | Sequential |
| Clutch | Wet | Wet |
| Drive | Chain | Chain |
| Chain type | DID 50V4 | |
| Gears count | 5 | 6 |
| Primary ratio | 3.4 | 1.955 |
| Final drive | 3.071 | 2.875 |
| 1. gear | 2.643 (26 mph) | 2.846 (65 mph) |
| 2. gear | 1.778 (39 mph) | 1.947 (94 mph) |
| 3. gear | 1.316 (53 mph) | 1.556 (118 mph) |
| 4. gear | 1.045 (66 mph) | 1.333 (138 mph) |
| 5. gear | 0.875 (79 mph) | 1.19 (154 mph) |
| 6. gear | 1.083 (170 mph) |
| Chasis | Yamaha YBR 125 | Yamaha FZ6-ST |
|---|---|---|
| Frame type | Diamond steel | Diamond |
| Front susp. | Telescopic fork, 110mm | Telescopic fork, 5.12 in travel |
| Rear susp. | Swingarm, 4.13 in travel | Monoshock, coil spring/gas oil damper |