Aprilia RS125

The compact and lightweight dashboard provides all the functions of a real racing unit. It includes an analogue rev counter and a multi-functional digital display with handlebar controls to access tachometer, trip counter, battery voltage meter, clock and 20 lap timer, coolant temperature gauge and fuel reserve indicator. The unit also incorporates provision for interfacing with a racetrack finish line timing system.

The upside down fork and rear suspension with rising rate linkages guarantee the highest levels of handling, safety and comfort, both in everyday traffic and on the racetrack. Even the brakes represent the best the market currently has to offer. The radial front caliper is a four piston unit and is coupled with a metal braided brake hose and a 320 mm floating disc. The rear brake also combines with a 220 mm disc and metal braided brake hose. The result is precise, balanced and powerful ‘GP’ style braking.

The ‘Y’ spoke alloy wheels have six spokes at the front and five at the rear. These low weight, high strength wheels are fitted with tubeless radial tyres for unrivalled agility and superb road-holding under all conditions.

The famous liquid cooled, single cylinder, two-stroke engine that drives the RS 125 sets the standard for 125 cc powerplants. Derived from Aprilia’s vast competition experience, it is reliable on the road and powerful on the track, thanks to refined technical solutions like reed valve induction in the crankcase and an anti-vibration countershaft. And of course it is homologated to Euro 3 standards for maximum performance plus respect for the environment.

With its aggressive, penetrating and exciting design, the RS 125 instantly expresses all your desires for victory. Its sleek lines are the result of the latest aerodynamic developments and extensive wind-tunnel testing. The RS 125 offers unrivalled protection against turbulence. In fact, everything about it, from its nose fairing with latest generation twin headlights to its mean-looking and streamlined tail with integrated seat and powerful rear lights is designed to offer minimal resistance to the air.

One of the most prestige components on the new RS 125 is its die-cast
aluminium alloy swingarm. In addition to guaranteeing the highest degree of
torsional rigidity of any production 125, the swingarm’s special design also lets you lean further than ever on the track without touching the asphalt.

The RS 125’s sophisticated and lightweight frame is developed from the superb racing frames of Aprilia’s amazing 125 GP bikes. Made from polished aluminium alloy, it guarantees extremely high torsional rigidity, and delivers maximum control and agility under racing conditions.

Aprilia RS125 technical spec:

Engine  Liquid cooled, single cylinder two stroke. 
  Aluminium cylinder with Nikasil coated liner. 
  Read valve intake. Separate lubrication. 
  Homologated to Euro 3 standards.
Bore by stroke  54 x 54.5 mm
Displacement  124.8 cc
Compression ratio  12.5 ± 0.5 : 1
Carburettor  Dell’Orto VHST Ø 28 mm
Ignition  Electronic CDI ignition.
Starting  Electric.
Alternator  12 V – 180 W
Lubrication  Separate mixing with variable displacement, volumetric pump.
Gearbox  6 speed.
1st
10/30 (0.33); 2nd 14/29 (0.48); 3rd 17/27 (0.63);
4th
19/25 (0.76); 5th
21/24 (0.87); 6th
22/23 (0.67).
Primary drive  Gearbox: 63/19 (3.31)
Final drive  Chain: 17/40 (2.35)
Clutch  Multi-disc in oil bath.
Frame  Sloping twin-spar frame in thin wall box section cast aluminium, 
  with reinforcement cross-ribbing.

Front suspension  Upside down hydraulic fork, Ø 40 mm.
  Wheel travel 120 mm.
Rear suspension  Swingarm with asymmetric members in thin wall box section cast aluminium. 
  Hydraulic monoshock with adjustable spring preload.
  Wheel travel 120 mm
Front Brakes  Floating Ø 320 mm disc. 
  Radial caliper with four differential diameter pistons, Ø 32 mm – Ø 27 mm.
Rear Brakes  Single Ø 220 mm disc. Caliper with two Ø 30 mm pistons.
Wheels  Aluminium alloy.
  Front 3.00 x 17”;
  rear 4,00 x 17”.
Tyres  Tubeless radial.
  Front 110/70 17”;
  rear 150/60 17”.
Dimensions  Overall length 1,955 mm
  Overall width (at handlebars) 720 mm
  Overall height (at windshield) 1,100 mm
  Seat height 805 mm
  Wheelbase 1,345 mm
Tank  14 litres (3.5 litre reserve)

Max Power : ± 34 hp / 24.8 kW @ 11250 rpm
Max Torque :  ± 20 Nm @ 10000 rpm

Fuel comsumption : ± 18.6 km/l