| AJS JSM 50 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled, two-stroke, single cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 49 cm3 | - |
| Horsepower | |
| 5/- KW(hp)/RPM | 48/- KW(hp)/RPM |
| Fuel System | |
| carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel | Aluminium frame |
| Front Suspension | |
| telescopic fork | - |
| Rear Suspension | |
| monoshock | - |
| Front Brake | |
| single disc | - |
| Rear Brake | |
| single disc | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 83.5 in OR 2121 mm | - |
| Overall Width | |
| 33.1 in OR 841 mm | - |
| Seat Height | |
| 32.3 in OR 820 mm | - |
| Weight | |
| 231 lbs OR 105 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 2.4 gallons OR 9.1 L | - |
| Wheelbase | |
| 55.1 in OR 1400 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 110/70-17 | - |
| Rear | |
| 130/70-17 | - |
