Sportbikes
2011Aprilia RS4 125
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The 2011 Aprilia RS4 125 is a lightweight sport bike engineered for new riders and commuters seeking genuine sportbike styling with manageable performance. Its fuel-injected single-cylinder engine delivers 16 horsepower with efficient liquid cooling and six-speed transmission, making it ideal for learning track fundamentals or daily urban riding.
- Capacity
- 124.8 ccm
- Engine
- Single, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 120.0 kg
- Seat height
- 820 mm
- Power
- 16.0 HP (11.8 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a sporty, race-replica styled machine for learning proper sportbike ergonomics and cornering technique at accessible speeds.
- Built for
- 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.
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
- 16.0 HP (11.8 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.1333 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
- CDI
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
- Torque
- Not on record - add it
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
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- aluminium, Single cradle frame
- Front suspension
- Upside down hydraulic fork, 40 mm.
- 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
- Front brakes diameter
- 300 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 110/80-R17
- Rear tyre
- 130/70-R17
Other
- Color options
- Red/black
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 | 2011 | 2012 | 2014 | 2015 | 2016 |
|---|---|---|---|---|---|
| Capacity | 125 cc | 125 cc | 125 cc | 125 cc | 125 cc |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm | 820 mm |
| Fuel capacity | 14.5 L | 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?
The 2011 Aprilia RS4 125 has a Capacity of 124.8 ccm (7.62 cubic inches).
What engine power does the Aprilia RS4 125 have?
The 2011 Aprilia RS4 125 has a Power of 16.0 HP (11.8 kW).
How many gears does the Aprilia RS4 125 have?
The 2011 Aprilia RS4 125 has a Gearbox of 6-speed.
How much does the Aprilia RS4 125 weigh?
The 2011 Aprilia RS4 125 has a Wet weight of 120.0 kg (264.6 pounds).
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