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Aprilia RS4 125 - 2015 Specifications and Reviews

5 stars Average rating: 5 from 1 votes
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Intresting Fact:
At the point the RS4 125 was launched over 100,000 of its predecessor (RS125) had been sold
Replacement for the: 2011 Aprilia RS125

About the Aprilia RS4 125

Launched in 2011, the four stroke RS4 125 is the bigger brother to the Aprilia RS4 50 and is based on the Derbi GPR125.

A race kit is available which boosts the power from 14.8bhp to 25bhp.

Styling is based on the RSV4 superbike. There is also an optional RSV4 style quick shift system available.

General information

CategorySport
Year2015
ModelAprilia RS4 125
 
 

Engine and Transmission Specifications

DrivelinePrimary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
ClutchMulti-plate in oil bath.
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionElectronic with CDI capacity discharge
Fuel systemInjection
Valves per cylinder4
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression12.5:1
Torque10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 Revolutions">RPM
Power15.00 Horsepower">HP (10.9 Kilowatt">kW)) @ 10500 Revolutions">RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.80 ccm (7.62 cubic inches)

Brakes, suspension, Frame and wheels

WheelsLight alloy with 6 split spokes
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. Single 30 mm piston
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. Stainless steel disc with radial 4 piston calliper
Rear tyre130/70-R17
Front tyre110/80-R17
Rear wheel travel122 mm (4.8 inches)
Rear SuspensionSwingarm. Hydraulic monoshock with adjustable spring preload.
Front wheel travel110 mm (4.3 inches)
Front SuspensionUpside down hydraulic fork, 40 mm.
Frame typeAluminium perimeter frame
 
 

Physical measures and capacities

Reserve fuel capacity3.50 litres (0.92 gallons)
Fuel capacity14.50 litres (3.83 gallons)
Wheelbase1,350 mm (53.1 inches)
Overall width740 mm (29.1 inches)
Overall length1,955 mm (77.0 inches)
Seat height820 mm (32.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc120.0 kg (264.6 pounds)

Other specs

StarterElectric
Color optionsBlack, yellow

Rider Reviews

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