| BSA C15 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| air-cooled, four-stroke, single cylinder, SOHV | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 249 cm3 | - |
| Bore X Stroke | |
| 2.6x2.8 in OR 66 mm | - |
| Compression Ratio | |
| 8.0:1 | - |
| Horsepower | |
| 15/5000 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Fuel System | |
| Amal carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 4-speed, manual | - |
| Clutch | |
| four friction plates | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| telescopic fork | - |
| Rear Suspension | |
| plunger shocks | - |
| Front Brake | |
| drum | - |
| Rear Brake | |
| drum | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 78 in OR 1981 mm | - |
| Overall Width | |
| 26 in OR 660 mm | - |
| Seat Height | |
| 30 in OR 762 mm | - |
| Ground Clearance | |
| 5 in OR 127 mm | - |
| Weight | |
| 280 lbs OR 127 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 2.9 gallons OR 11.0 L | - |
| Wheelbase | |
| 51.5 in OR 1308 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 3.25 x 17 | - |
| Rear | |
| 3.25 x 17 | - |
