| APRILIA RS4 50 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled, two-stroke, single cylinder, DOHC, 4 valves | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 49.9 cm3 | - |
| Bore X Stroke | |
| 1.6x1.6 in OR 41 mm | - |
| Compression Ratio | |
| 11.5:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| carburetor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Primary Drive | |
| gears | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| aluminium | Aluminium frame |
| Front Suspension | |
| 41mm upside-down fork | - |
| Rear Suspension | |
| monoshock | - |
| Front Brake | |
| single 300mm disc, 4-piston caliper | - |
| Rear Brake | |
| single 218mm disc, 1-piston caliper | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 76.9 in OR 1953 mm | - |
| Overall Width | |
| 29.1 in OR 739 mm | - |
| Seat Height | |
| 32.3 in OR 820 mm | - |
| Weight | |
| - | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 3.8 gallons OR 14.4 L | - |
| Wheelbase | |
| 53.1 in OR 1349 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 100/80 - 17 | - |
| Rear | |
| 130/70 - 17 | - |
