Sportbikes
2015Aprilia RS4 125 Replica
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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.
- Capacity
- 124.8 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 120.0 kg
- Seat height
- 820 mm
- Power
- 15.0 HP (10.9 kW) @ 10500 RPM
What’s new for the 2015 Aprilia RS4 125 Replica
vs the 2014| Spec | 2014 | 2015 |
|---|---|---|
| Front suspension | Upside down hydraulic fork, 40 mm. | Upside down hydraulic fork |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a miniature sportbike, it's best suited to sharp cornering, racetrack-style riding, and learning proper sportbike technique at low stakes speeds.
- Built for
- 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.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.8 ccm
- Power
- 15.0 HP (10.9 kW) @ 10500 RPM
- CO2 Emissions
- 3 CO2 g/km
- Torque
- 10.9 Nm (1.1 kgf-m) @ 8250 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1250 HP/kg (wet)
- Bore x stroke
- 58.0 x 47.0 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Electronic with CDI capacity discharge
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multi-plate wet clutch with mechanical slip system
Dimensions & weight
- Wheelbase
- 1350 mm
- Overall length
- 1955 mm
- Overall width
- 740 mm
- Overall height
- 1138 mm
- Seat height
- 820 mm
- Wet weight
- 120.0 kg
- Fuel capacity
- 14.50 litres
- Reserve fuel capacity
- 3.50 litres
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Aluminium perimeter frame
- Front suspension
- Upside down hydraulic fork
- Rear suspension
- Swingarm. Hydraulic monoshock with adjustable spring preload.
- Front wheel travel
- 110 mm
- Rear wheel travel
- 130 mm
Brakes & wheels
- Front brakes
- Single disc. Stainless steel disc with radial 4 piston calliper
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc. Single 30 mm piston
- Rear brakes diameter
- 220 mm
- Front tyre
- 110/80-R17
- Rear tyre
- 130/70-R17
Other
- Color options
- Red
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2013 | 2014 | 2015 | 2016 |
|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm |
| Fuel capacity | 14.5 L | 14.5 L | 14.5 L | 14.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Aprilia RS4 125 Replica?
The 2015 Aprilia RS4 125 Replica has a Capacity of 124.8 ccm (7.62 cubic inches).
What engine power does the Aprilia RS4 125 Replica have?
The 2015 Aprilia RS4 125 Replica has a Power of 15.0 HP (10.9 kW) @ 10500 RPM.
How many gears does the Aprilia RS4 125 Replica have?
The 2015 Aprilia RS4 125 Replica has a Gearbox of 6-speed.
What is the torque of the Aprilia RS4 125 Replica?
The 2015 Aprilia RS4 125 Replica has a Torque of 10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM.
How much does the Aprilia RS4 125 Replica weigh?
The 2015 Aprilia RS4 125 Replica has a Wet weight of 120.0 kg (264.6 pounds).
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