| BSA Bluestar 500 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| air-cooled, four-stroke, single cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 496 cm3 | - |
| Compression Ratio | |
| 9.5:1 | - |
| Horsepower | |
| 54/4500 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Fuel System | |
| carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 3-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Primary Drive | |
| gear | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| paralelogram fork | - |
| Rear Suspension | |
| hard-tail, sprung seat | - |
| Front Brake | |
| drum | - |
| Rear Brake | |
| drum | - |
| dimension specs | |
| Weight | |
|---|---|
| 357 lbs OR 162 kg | 351 lbs OR 159 kg |
