| YAMAHA RD 250 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| 2 stroke, 2 cylinder, air cooled | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 247 cm3 | - |
| Bore X Stroke | |
| 2.1x2.1 in OR 53 mm | - |
| Compression Ratio | |
| 7.5:1 | - |
| Horsepower | |
| 30/7500 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 21/7000 lb-ft/RPM OR 28/7000 Nm/RPM | - |
| Fuel System | |
| Carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6 Speed | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| - | Aluminium frame |
| Front Brake | |
| Drum | - |
| Rear Brake | |
| Drum | - |
| dimension specs | |
| Weight | |
|---|---|
| - | 351 lbs OR 159 kg |
