Aprilia RS4 125 - 2013 Specifications and Reviews
The 2013 Aprilia RS4 125 is an agile sport bike designed for entry-level riders seeking authentic sportbike styling and handling. Powered by a nimble 124cc four-stroke engine producing 16 horsepower, it delivers responsive performance ideal for commuting and weekend riding. Known for its sharp Italian design and accessible fun factor, the RS4 125 bridges the gap between casual riders and sport bike enthusiasts.
About the Aprilia RS4 125
Launched in 2011, the four stroke RS4 125 is the bigger brother to the Aprilia RS4 50 and is based on the Derbi GPR125.
A race kit is available which boosts the power from 14.8bhp to 25bhp.
Styling is based on the RSV4 superbike. There is also an optional RSV4 style quick shift system available.
General information | |
| Category | Sport |
| Year | 2013 |
| Model | Aprilia RS4 125 |
| | |
Engine and Transmission Specifications | |
| Emission details | Euro 3 |
| Driveline | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Clutch | Multi-plate in oil bath. |
| Transmission type,final drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | Electronic with CDI capacity discharge |
| Fuel system | Injection |
| Valves per cylinder | 4 |
| Bore x stroke | 58.0 x 47.0 mm (2.3 x 1.9 inches) |
| Compression | 12.5:1 |
| Power | 16.04 |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 124.80 ccm (7.62 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Light alloy with 6 split spokes |
| Rear brakes diameter | 220 mm (8.7 inches) |
| Rear brakes | Single disc. Single 30 mm piston |
| Front brakes diameter | 300 mm (11.8 inches) |
| Front brakes | Single disc. Stainless steel disc with radial 4 piston calliper |
| Rear tyre dimensions | 130/70-R17 |
| Front tyre dimensions | 110/80-R17 |
| Rear suspension travel | 130 mm (5.1 inches) |
| Rear suspension | Swingarm. Hydraulic monoshock with adjustable spring preload. |
| Front suspension travel | 110 mm (4.3 inches) |
| Front suspension | Upside down hydraulic fork, 40 mm. |
| Frame type | Aluminium perimeter frame |
Physical measures and capacities | |
| Reserve fuel capacity | 3.50 litres (0.92 gallons) |
| Fuel capacity | 14.50 litres (3.83 gallons) |
| Wheelbase | 1,350 mm (53.1 inches) |
| Overall width | 740 mm (29.1 inches) |
| Overall length | 1,955 mm (77.0 inches) |
| Overall height | 1,138 mm (44.8 inches) |
| Seat height | 820 mm (32.3 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 120.0 kg (264.6 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Racing black, Racing white |
| Starter | Electric |
Performance Profile & Rider Fit
Best For
Rider Profile
| Best For | This is an ideal bike for new or learner riders, including those on a restricted license, thanks to its light weight and modest power output. |
| Purpose | Built as a sporty, race-replica styled machine for learning proper sportbike ergonomics and cornering technique at accessible speeds. |
| Rider Fit | Its low 120 kg weight and compact dimensions make it very manageable for smaller or less experienced riders, though the sporty seat height and committed riding position suit shorter to average-height riders best. |
| Character | A nimble, high-revving little sportbike that rewards momentum-carrying, corner-focused riding rather than straight-line speed. |
| Not Ideal For | This is not the right bike for experienced riders seeking real power, highway touring comfort, or two-up long-distance travel. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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