Aprilia RS4 125 (2012-13)

The Aprilia RS4 125 motorcycle was produced from 2012 to 2013. It has a four-stroke, single-cylinder, DOHC engine with a capacity of 124.8 cc. It is liquid-cooled, has a compression ratio of 12.5 +/- 0.5:1, and uses electronic injection and ignition with CDI capacity discharge. It conforms to Euro 3 emission standards and has an electric start. The motorcycle has a maximum power of 11.7 kW at 10500 rpm and a maximum torque of 11 Nm at 8500 rpm. It has a six-speed transmission and a chain final drive. The aluminum perimeter frame supports an upside-down fork front suspension and an asymmetric swingarm with monoshock rear suspension. The front and rear brakes are single-disc with a 4-piston caliper and 1 piston caliper, respectively. The wheels are 110/80 17 and 130/70 17, with a wheelbase of 1350 mm and a seat height of 820 mm. The motorcycle has a wet weight of 120 kg and a fuel capacity of 14.5 liters.


Technical specifications:

Make Model: Aprilia RS4 125

Year: 2012 – 13


Engine: Four stroke, single cylinder, DOHC, 4 valves
Capacity: 124.8 cc / 7.6 cu in
Bore x Stroke: 58 X 47 mm
Cooling System: Liquid cooled
Compression Ratio: 12.5 +/- 0.5:1
Induction: Electronic injection
ECU: Magneti Marelli MIU G3, ~A32 mm
Ignition: Electronic with CDI capacity discharge
Emission Standard: Euro 3
Starting: Electric
Max Power: 11.7 kW / 16 hp @ 10500 rpm
Max Torque: 11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm
Clutch: Multiple discs, in oil bath
Transmission: 6 Speed
Final Drive: Chain

Gear Ratio: 1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05)
Frame: Aluminum perimeter frame
Front Suspension: ~A41 mm Upside down fork
Front Wheel Travel: 110 mm / 4.3 in
Rear Suspension: Asymmetric swingarm with monoshock
Rear Wheel Travel: 130 mm / 5.1 in
Front Brakes: Single ~A300 mm disc, 4 piston caliper
Rear Brakes: Single ~A218 mm disc, 1 piston caliper
Front Tyre: 110/80 17
Rear Tyre: 130/70 17
Dimensions: Length: 1953 mm / 76.8 in Width: 740 mm / 29.1 in Height: 1138 mm / 44.6 in
Wheelbase: 1350 mm / 53.1 in
Seat Height: 820 mm / 32.3 in
Wet Weight: 120 kg / 264.6 lbs
Fuel Capacity: 14.5 Liters / 3.8 gal

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