RS4 125

A long and enviable career

It is in the younger and most competitive classes of the MotoGP that Aprilia has established itself as a true "school of champions".r wheel on the road.

RS4 125

With the Aprilia RS series (RS, RSV, RSW and RSA) 250's and 125's, riders such as Biaggi, Rossi, Melandri, Stoner, Lorenzo and Simoncelli have raced and obtained their first great triumphs.


A wealth of successes and technical skills that Aprilia has always transferred to mass production - both in terms of technical philosophy and aesthetics, faithfully replicating the image of bikes having achieved success with the greatest champions of contemporary motorcycling.

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Aprilia single-cylinder, four stroke, fuel injection.



Maximum power

15 HP (11 kW) @ 10.500 rpm

Maximum torque

1,11 kgm (10,9 Nm) @ 8.250 rpm


Liquid cooling

Front suspension

Ø41 mm upside-down fork. 110 mm wheel travel

Rear suspension

Asimmetric swingarm. Hydraulic monoshock absorber. Wheel travel: 122 mm

Front Brake

Stainless steel disc (Ø 300 mm). Four-piston radial caliper. Metal braided brake line.

Rear Brake

Stainless steel disc (Ø 218 mm) with single piston caliper. Metal braided brake line.

Front tyre

Radial tubeless - 100/80 ZR 17

Rear tyre

Radial tubeless - 130/70 ZR 17

Seat height

820 mm

Fuel tank

14,5 lt (3,3 lt reserve)


Euro 3 homologation