Aprilia RS4 50 2015 specs
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| Emission Details | Euro 2 |
| Displacement | 49.90 ccm (3.04 cubic inches) |
| Engine Type | Reed intake valve |
| Engine Details | Single cylinder, two-stroke |
| Compression | 11.5:1 |
| Bore X Stroke | 39.9 x 39.9 mm (1.6 x 1.6 inches) |
| Fuel System | Carburettor |
| Ignition | Electronic with CDI capacity discharge |
| Lubrication System | Automatic mixer |
| Cooling System | Liquid |
| Gearbox | 6-speed |
| Transmission Type Final Drive | Chain |
| Clutch | Multiplate wet clutch |
| Driveline | Chain, 11/53. Primary drive: Gears, 21/78. |
| Frame Type | Twin spar aluminium frame |
| Front Brakes | Single disc |
| Front Brakes Diameter | 300 mm (11.8 inches) |
| Front Suspension | 40 mm upside down fork |
| Front Tyre | 110/80-17 |
| Front Wheel Travel | 110 mm (4.3 inches) |
| Rear Brakes | Single disc |
| Rear Brakes Diameter | 180 mm (7.1 inches) |
| Rear Suspension | Asymmetric swingarm with monoshock |
| Rear Tyre | 130/70-17 |
| Rear Wheel Travel | 130 mm (5.1 inches) |
| Wheels | light alloy with 6 split spokes, with sealing profile for tubeless tyres |
| Fuel Capacity | 14.50 litres (3.83 gallons) |
| Overall Length | 1,953 mm (76.9 inches) |
| Overall Width | 740 mm (29.1 inches) |
| Seat Height | 820 mm (32.3 inches) If adjustable, lowest setting. |
| Reserve Fuel Capacity | 3.30 litres (0.87 gallons) |
| Overall Height | 1,138 mm (44.8 inches) |
| Color Options | Red/black, white/black |
| Electrical | Battery: 12V – 6Ah |
| Starter | Electric |
| Instruments | LCD screen |
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