2014 Aprilia RS4 125 Specifications

  • Updated: 2023-03-20

General information

ModelAprilia RS4 125

Engine and transmission

Displacement124.8 ccm (7.62 cubic inches)
Engine typeSingle cylinder, four-stroke
Power15.0 HP (10.9 kW) @ 10500 RPM
Torque10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Bore x stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Valves per cylinder4
Fuel systemInjection
IgnitionElectronic with CDI capacity discharge
Lubrication systemWet sump
Cooling systemLiquid
Transmission typeChain (final drive)
ClutchMulti-plate in oil bath.
DrivelinePrimary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
Emission detailsEuro 3

Chassis, suspension, brakes and wheels

Frame typeAluminium perimeter frame
Front suspensionUpside down hydraulic fork, 40 mm.
Front wheel travel110 mm (4.3 inches)
Rear suspensionSwingarm. Hydraulic monoshock with adjustable spring preload.
Rear wheel travel122 mm (4.8 inches)
Front tire110/80-R17
Rear tire130/70-R17
Front brakesSingle disc. Stainless steel disc with radial 4 piston calliper
Diameter300 mm (11.8 inches)
Rear brakesSingle disc. Single 30 mm piston
Diameter220 mm (8.7 inches)
WheelsLight alloy with 6 split spokes
Weight incl. oil, gas, etc120.0 kg (264.6 pounds)
Seat height820 mm (32.3 inches) If adjustable, lowest setting.
Overall height1138 mm (44.8 inches)
Overall length1955 mm (77.0 inches)
Overall width740 mm (29.1 inches)
Wheelbase1350 mm (53.1 inches)
Fuel capacity14.50 litres (3.83 US gallons)
Reserve fuel capacity3.50 litres (0.92 US gallons)
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