The four-stroke One 50 was the economy-minded version of Aprilia's compact Sportcity One, using a quiet, clean two-valve 50 cc engine instead of the…
| MODEL | APRILIA SPORTCITY ONE 50 4T 2009 - 2011 |
| Year | 2009 - 2011 |
| Engine Type | Single cylinder, four-stroke, SOHC, 2 valves |
| Displacement / Capacity | 49.9 cc / 3.0 cu in |
| Bore X Stroke | 39 x 41.8 mm / 1.54 x 1.65 in |
| Compression Ratio | 11.5:1 |
| Cooling System | Air cooled |
| Max Power | 2.3 kW / 3.1 hp @ 7000 rpm |
| Max Torque | 3.3 Nm / 2.4 lb-ft @ 6300 rpm |
| Ignition | Electronic inductive discharge ignition with variable advance |
| Induction | 17.5 mm carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump, forced circulation with mechanical pump |
| Gear Box | Automatic CVT (variator) |
| Clutch | Automatic centrifugal dry clutch |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | Single cradle frame in high strength steel tube |
| Front Suspension | 32 mm hydraulic telescopic fork, 85 mm / 3.3 in travel |
| Rear Suspension | Engine unit acting as swingarm, single hydraulic shock absorber with adjustable spring preload, 84 mm / 3.3 in travel |
| Front Brakes | Single 220 mm disc |
| Rear Brakes | 140 mm drum |
| DIMENSION SPECS | |
| Overall Length | 1950 mm / 76.8 in |
| Overall Width | 740 mm / 29.1 in |
| Overall Height | — |
| Seat Height | 775 mm / 30.5 in |
| Wheelbase | 1358 mm / 53.5 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 110 kg / 242.5 lbs |
| WHEEL SPECS | |
| Front Tyre | 120/70-14 |
| Rear Tyre | 120/70-14 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.5 Litres / 2.0 US gal |
| Fuel Consumption | — |
| Top Speed | 45 km/h / 28 mph |
The four-stroke One 50 was the economy-minded version of Aprilia's compact Sportcity One, using a quiet, clean two-valve 50 cc engine instead of the two-stroke. Performance is modest, but it runs a long way on its 7.5-litre tank and shares the One's 14-inch wheels, 220 mm front disc and two-up seat. It became the bread-and-butter Aprilia 50 in North America until the SR Motard 50 replaced it.
