| APRILIA SR 50 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| Liquid cooled horizontal single cylinder two stroke | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 49 cm3 | - |
| Bore X Stroke | |
| 1.6x1.5 in OR 41 mm | - |
| Compression Ratio | |
| 11.5:1 | - |
| Horsepower | |
| - | 48/- KW(hp)/RPM |
| Fuel System | |
| Electronic Fuel injection | - |
| transmission specs | |
| Gearbox | |
|---|---|
| Automatic | - |
| Clutch | |
| Automatic centrifugal dry clutch | - |
| Primary Drive | |
| V-belt | - |
| Final Drive | |
| Gears in oil bath | - |
| chassis specs | |
| Frame | |
|---|---|
| Split single cradle frame in high tensile strength steel tube | Aluminium frame |
| Front Suspension | |
| Hydraulic fork, 90 mm wheel travel | - |
| Rear Suspension | |
| Engine unit acting as swingarm frame linkages on two radial silent block mountings wheel travel 70 mm | - |
| Front Brake | |
| 7.5” stainless steel disc racing caliper with twin opposed 1.3” pistons | - |
| Rear Brake | |
| 7.5” stainless steel disc racing caliper with twin opposed 1.2” pistons | - |
| dimension specs | |
| Overall Length | |
|---|---|
| 73.2 in OR 1859 mm | - |
| Overall Width | |
| 27.8 in OR 706 mm | - |
| Seat Height | |
| 32.2 in OR 818 mm | - |
| Weight | |
| - | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 1.8 gallons OR 6.8 L | - |
| Wheelbase | |
| 50.8 in OR 1290 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 130/60 x 13 | - |
| Rear | |
| 130/60 x 13 | - |
