Aprilia RS 125 - 2018 Specifications and Reviews

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Replacement for the: Aprilia RS4 125

About the Aprilia RS 125

Powered by a Euro 4 compliant liquid cooled 124.2cc single cylinder four stroke engine, producing 14.8bhp 

Slightly confusingly the 2017 RS125 replaces the 2011-2016 RS4 125, which itself replaced the 2006-2012 two stroke RS125 In the majority of countries, however still continues to carry the RS4 moniker in some!

compared to the previous version it is Euro 4 compliant and now comes with ABS.

Optional Extras include a quickshifter, USB port and smartphone connectivity.

There is a MotoGP Replica edition which includes the quickshifter.

General information

Model:Aprilia RS4 125

Engine and Transmission Specifications

Emission details:Euro 4
Driveline:Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
Clutch:Multi-plate in oil bath.
Transmission type,final drive:Chain
Cooling system:Liquid
Lubrication system:Wet sump
Ignition:Electronic with CDI capacity discharge
Fuel control:Double Overhead Cams/Twin Cam (DOHC)
Fuel system:Injection. Magneti Marelli M3G 32mm ECU
Valves per cylinder:4
Bore x Stroke:58.0 x 47.0 mm (2.3 x 1.9 inches)
Torque:10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 Revolutions">RPM
Power:15.00 Horsepower">HP (10.9 Kilowatt">kW)) @ 10500 Revolutions">RPM
Engine type:Single cylinder, four-stroke
Capacity:124.80 ccm (7.62 cubic inches)

Brakes, suspension, Frame and wheels

Wheels:Light alloy with 6 split spokes
Rear brakes diameter:218 mm (8.6 inches)
Rear brakes:Single disc. Single 30 mm piston
Front brakes diameter:300 mm (11.8 inches)
Front brakes:Single disc. Stainless steel disc with radial 4 piston calliper
Rear tyre:130/70-17
Front tyre:110/80-17
Rear wheel travel:120 mm (4.7 inches)
Rear Suspension:Asymmetric swingarm with monoshock
Front wheel travel:110 mm (4.3 inches)
Front Suspension:Upside down hydraulic fork, 40 mm.
Frame type:Aluminium perimeter

Physical measures and capacities

Reserve fuel capacity:3.50 litres (0.92 gallons)
Fuel capacity:14.50 litres (3.83 gallons)
Wheelbase:1,350 mm (53.1 inches)
Overall width:740 mm (29.1 inches)
Overall length:1,955 mm (77.0 inches)
Seat height:820 mm (32.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc:120.0 kg (264.6 pounds)

Other specs

Instruments:Analogue/digital multifunction dashboard with LCD display
Color options:Black/red, silver/red

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