Aprilia SR 50 Factory 2021 specs
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| Displacement | 49.00 ccm (2.99 cubic inches) |
| Engine Type | Reed valve |
| Engine Details | Single cylinder, two-stroke |
| Power | 5.36 HP (3.9 kW)) @ 8500 RPM |
| Torque | 4.70 Nm (0.5 kgf-m or 3.5 ft.lbs) |
| Compression | 11.5:1 |
| Bore X Stroke | 40.0 x 39.3 mm (1.6 x 1.5 inches) |
| Fuel System | Injection. EFI low flow injector. Direct injection system External opening, SMD 8 micron medium spray. |
| Ignition | CDI |
| Lubrication System | Wet sump forced lubrication system with mechanical pump |
| Cooling System | Liquid |
| Gearbox | Automatic |
| Transmission Type Final Drive | Belt |
| Clutch | Automatic centrifugal dry clutch |
| Driveline | V belt. Continuous automatic variator . |
| Top Speed | 45.0 km/h (28.0 mph) |
| Emission Details | Euro 4 |
| Rear Suspension | Engine unit acting as swingarm. Monoshock. |
| Rear Tyre | 130/60-13 |
| Rear Wheel Travel | 70 mm (2.8 inches) |
| Wheels | Five spoke, light alloy wheels |
| Frame Type | Split single cradle frame in high tensile strength steel tube |
| Front Brakes | Single disc |
| Front Brakes Diameter | 190 mm (7.5 inches) |
| Front Suspension | Hydraulic fork, |
| Front Tyre | 130/60-13 |
| Front Wheel Travel | 90 mm (3.5 inches) |
| Rear Brakes | Single disc |
| Rear Brakes Diameter | 190 mm (7.5 inches) |
| Dry Weight | 107.0 kg (235.9 pounds) |
| Fuel Capacity | 7.60 litres (2.01 gallons) |
| Overall Height | 1120 mm (44.1 inches) |
| Overall Length | 1860 mm (73.2 inches) |
| Overall Width | 705 mm (27.8 inches) |
| Power Weight Ratio | 0.0376 HP/kg |
| Reserve Fuel Capacity | 1.20 litres (0.32 gallons) |
| Seat Height | 795 mm (31.3 inches) If adjustable, lowest setting. |
| Carrying Capacity | Helmet compartment. |
| Color Options | Black/red/white/green_x000D_ |
| Instruments | Active matrix instrument panel |
| Light | Dual halogen headlights |
| Starter | Electric |
| Factory Warranty | 2-year unlimited-mileage warranty. |
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