Aprilia RS4 125 (2011)

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The Aprilia RS4 125 is a 2011 model motorcycle with a four-stroke, single-cylinder, DOHC, four-valve engine and a capacity of 124.8 cc. The engine is liquid-cooled and has a compression ratio of 12.5 +/- 0.5:1. The bike has an electronic injection induction and its ECU is a Magneti Marelli MIU G3. The ignition is electronic with CDI capacity discharge and the emission standard meets Euro 3. The bike has an electric starter and can reach a maximum power of 11.7 kW at 10500 rpm and a maximum torque of 11 Nm. The clutch is multiple discs, in oil bath and the transmission is 6-speed. The bike has a chain final drive and a frame made of aluminum perimeter frame. The front suspension is an upside-down fork of ~A41 mm and the rear suspension is asymmetric swingarm with monoshock. The front and rear brakes have single discs. The dimensions of the bike are 1953 mm in length, 740 mm in width, and 1138 mm in height. The wheelbase is 1350 mm and the seat height is 820 mm. The bike has a wet weight of 120 kg and a fuel capacity of 14.5 liters. According to Motorcycle.com, the bike is suitable for beginners, as it is agile and easy to ride. However, it may not be suitable for long distances due to its small size.

Technical specifications:

Make Model: Aprilia RS4 125

Year: 2011


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
Review: Motorcycle.com

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