| OSSA E-71 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Air-cooled, Single Cylinder, 2-stroke | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 250 cm3 | - |
| Bore X Stroke | |
| 2.36x2.83 in OR 60 mm | - |
| Compression Ratio | |
| 11.5:1 | - |
| Horsepower | |
| 23/6800 KW(hp)/RPM | 48/- KW(hp)/RPM |
| transmission specs | |
| Gearbox | |
|---|---|
| 5 Speed | - |
| Final Drive | |
| Chain | - |
| chassis specs | |
| Frame | |
|---|---|
| - | Aluminium frame |
| Front Brake | |
| Drum | - |
| Rear Brake | |
| Drum | - |
| dimension specs | |
| Ground Clearance | |
|---|---|
| 9.1 in OR 231 mm | - |
| Weight | |
| 211 lbs OR 96 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 3.4 gallons OR 12.9 L | - |
| Wheelbase | |
| 53.5 in OR 1359 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 4.00-18 | - |
| Rear | |
| 3.00-21 | - |
