The Aprilia RS4 125 motorcycle, manufactured between 2017 and 2018, is powered by a single cylinder, four-stroke engine with a capacity of 124.8cc, liquid cooling, and a compression ratio of 12.5 +/- 0.5:1. The bike has a 6-speed transmission and a chain final drive with a gear ratio ranging from 0.33 in 1st to 1.05 in 6th gear. The aluminum perimeter frame comprises upside-down forks and an asymmetric swingarm with a monoshock. Single-channel BOSCH ABS is available, while the front and rear wheels are made of light alloy with 6 split spokes and are fitted with tubeless tires. The height of the bike is 1135mm, and the width is 760mm, with a length of 1953mm. With a weight of 120kg, the bike has a fuel capacity of 14.5 liters, a seat height of 820mm, a maximum output of 11.7 kW at 10500 rpm, and maximum torque of 11 Nm at 8500 rpm. Front brakes consist of a single 300mm disc, while the rear brake has a single 218mm disc, and the motorcycle can generate16hp.
Technical specifications:
Make Model: Aprilia RS4 125
| Year | 2017 – 18 |
|---|---|
| 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 |
| Lubrication | Wet sump |
| Induction | Magneti Marelli M3G ~A , 32mm ECU |
| Ignition | Electronic with CDI capacity discharge |
| Emission Standard | |
| Alternator | 13V 235W |
| 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: 60/13 (4.61) |
| 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) |
| Primary Drive | 69/29 (2.38) |
| 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 300 mm disc, 4 piston caliper |
| Rear Brakes | Single 218 mm disc, 1 piston caliper |
| ABS | BOSCH Single channel |
| Wheels | light alloy with 6 split spokes, with sealing profile for tubeless tyres. |
| Rim Front | 2.75 x 17 |
| Rim Rear | 3.50 x 17 |
| Front Tyre | 110/80 17 |
| Rear Tyre | 130/70 17 |
| Dimensions | Length: 1953 mm / 76.8 in Width: 760 mm / 29.9 in Height: 1135 mm / 44.6 in |
| Wheelbase | 1353 mm / 53.2 in |
| Seat Height | 820 mm / 32.3 in |
| Wet Weight | 120 kg / 264.6 lbs |
| Fuel Capacity | 14.5 Litres / 3.8 US gal |
