Attribute | Aprilia RS4 50 2015 × | Aprilia RS 125 Replica SBK × |
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General | ||
Production from (year) | 2015 | 2010 |
Make | Aprilia | Aprilia |
Model | Aprilia RS4 50 | Aprilia RS 125 Replica SBK |
Category | Sport | Sport |
Engine and transmission | ||
Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
Fuel system | Carburettor | Carburettor. Dell Orto VHST 28. |
Displacement (cm³) | 49.9 | 124.8 |
Cooling system | Liquid | - |
Transmission type,final drive | Chain | Chain |
Bore (mm) | 39.9 | 54 |
Stroke (mm) | 39.9 | 54.5 |
Gearbox | 6-speed | 6-speed |
Emission details | Euro 2 | - |
Driveline | Chain, 11/53. Primary drive: Gears, 21/78. | - |
Ignition | Electronic with CDI capacity discharge | Electronic CDI ignition. |
Clutch | Multiplate wet clutch | Multi-plate in oil bath. |
Lubrication system | Automatic mixer | Separate mixing with variable displacement, volumetric pump. |
Compression | 11.5:1 | 12.5:1 |
Chassis | ||
Front suspension | 41 mm upside down fork, wheel travel 110 mm | Upside down hydraulic fork, Ø 40 mm. Wheel travel 120 mm. |
Rear suspension | Asymmetric swingarm with monoshock, wheel travel 130 mm | Swingarm with asymmetric members in thin wall box section cast aluminium. Hydraulic monoshock with adjustable spring preload. Wheel travel 120 mm. |
Front brakes | Single disc. Radial 4 piston calliper | Single disc |
Rear brakes | Single disc | Single disc |
Diameter (mm) | 220 | 220 |
Front tyre | 100/80-17 | 110/70-17 |
Rear tyre | 130/70-17 | 150/60-17 |
Other | ||
Starter | Electric | Electric |
Color options |
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Instruments | Analogue rev counter and LCD ccreen | - |
Dimensions | ||
Wheelbase (mm) | 1,350 | 1,345 |
Overall height (mm) | 1,138 | 1,100 |
Overall length (mm) | 1,953 | 1,955 |
Overall width (mm) | 740 | 720 |
Seat height (mm) | 820 | 805 |
Performance | ||
Reserve fuel capacity (l) | 3.3 | - |
Fuel capacity (l) | 14.5 | 14 |