Aprilia RS4 125 (2014-15)

The Aprilia RS4 125 was a motorcycle produced from 2014-2015 with a four-stroke, single cylinder, and 124.8cc engine. With a liquid-cooled cooling system and a compression ratio of 12.5 +/- 0.5:1, it had a maximum power of 11.7 kW / 16 hp @ 10500 rpm and a maximum torque of 11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm. The clutch was a multiple disc in oil bath, and it had a 6-speed transmission with a chain final drive. The aluminum perimeter frame supported a front suspension consisting of ~A41 mm upside-down fork and a rear suspension associated with an asymmetric swingarm and monoshock. The front brakes were a single ~A300 mm disc with four-piston caliper while the rear brakes were a single ~A218 mm disc with a one-piston caliper. The motorcycle had a length of 1953 mm / 76.8 in, width of 740 mm / 29.1 in, height of 1138 mm / 44.6 in, a wheelbase of 1350 mm / 53.1 in, and a seat height of 820 mm / 32.3 in. The Aprilia RS4 125 weighed 120 kg / 264.6 lbs with a 14.5 liters / 3.8 gal fuel capacity. It had a Euro 3 emission standard, electric starting, and a set of gear ratios with gear 1 being 11/33 (0.33) and gear 6 being 23/22 (1.05). It used electronic injection for fuel induction and Magneti Marelli MIU G3, ~A32 mm ECU.

Technical specifications:

Make Model: Aprilia RS4 125

Year: 2014 – 15
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