The SX 50 is Aprilia's 50 cc supermotard, a learner-class bike styled after the big SXV twins and running 17-inch wheels with road tyres.
| MODEL | APRILIA SX 50 2010 - 2012 |
| Year | 2010 - 2012 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 49.9 cc / 3.04 cu in |
| Bore X Stroke | 39.9 x 40 mm |
| Compression Ratio | 11.5:1 |
| Cooling System | Liquid cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | Electronic CDI |
| Induction | Dell'Orto PHVA 17.5 carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Automatic mixer |
| Gear Box | 6-speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | High-strength steel perimeter (beam) frame |
| Front Suspension | 40 mm hydraulic fork, 195 mm / 7.7 in travel |
| Rear Suspension | High-strength steel swingarm, hydraulic monoshock, 180 mm / 7.1 in travel |
| Front Brakes | Single 260 mm stainless steel disc, floating caliper |
| Rear Brakes | Single 180 mm disc, floating caliper |
| DIMENSION SPECS | |
| Overall Length | 2045 mm / 80.5 in |
| Overall Width | 835 mm / 32.9 in |
| Overall Height | — |
| Seat Height | 835 mm / 32.9 in |
| Wheelbase | 1400 mm / 55.1 in |
| Ground Clearance | — |
| Dry Weight | 98 kg / 216 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/80-17 |
| Rear Tyre | 130/70-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 7 Litres / 1.85 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The SX 50 is Aprilia's 50 cc supermotard, a learner-class bike styled after the big SXV twins and running 17-inch wheels with road tyres. It uses a liquid-cooled two-stroke single with a six-speed gearbox in a steel perimeter frame, with long-travel suspension and disc brakes at both ends. It is aimed at young riders who want a sporty commuter that can also handle a kart track.
