14 August. Friday 2026
Aprilia RS4 125 Replica - 2015 Specifications and Reviews
The 2015 Aprilia RS4 125 Replica is an entry-level sportbike designed for young and novice riders seeking authentic sport styling in a manageable package. Known for its aggressive fairings and race-inspired aesthetics, this lightweight machine delivers nimble handling and accessible performance. The electric starter, fuel injection, and compact dimensions make it ideal for urban commuting and weekend riding.
General information | |
| Category | Sport |
| Year | 2015 |
| Model | Aprilia RS4 125 Replica |
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 |
| Torque | 10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM |
| Power | 15.00 HP (10.9 kW) @ 10500 RPM |
| 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 | 130/70-R17 |
| Front tyre | 110/80-R17 |
| Rear wheel travel | 130 mm (5.1 inches) |
| Rear Suspension | Swingarm. Hydraulic monoshock with adjustable spring preload. |
| Front wheel travel | 110 mm (4.3 inches) |
| Front Suspension | Upside down hydraulic fork |
| 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 |
| Starter | Electric |
| Color options | Red |
Performance Profile & Rider Fit
15 hp
Peak Power
12.5s
0-60 mph
Best For
Track70%
City75%
Cornering88%
Daily Riding55%
Touring25%
Passenger15%
Rider Profile
| Best For | Ideal for beginner and learner riders, including those on restricted licences, thanks to its small displacement and forgiving power delivery. |
| Purpose | Built as a miniature sportbike, it's best suited to sharp cornering, racetrack-style riding, and learning proper sportbike technique at low stakes speeds. |
| Rider Fit | Its lightweight 120 kg chassis and compact dimensions make it very easy to manage for smaller or less experienced riders. |
| Character | Aggressive sportbike styling and full fairings give it a race-replica character despite its small single-cylinder engine. |
| Not Ideal For | Not suitable for highway touring, carrying a passenger comfortably, or riders seeking strong outright performance. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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