Enduro Bikes
2011Aprilia RX 125
39 fields on record
The 2011 Aprilia RX 125 is a lightweight enduro bike designed for novice and amateur off-road riders seeking an affordable entry point into dirt biking. Powered by a nimble two-stroke single-cylinder engine with 21.45 horsepower, it delivers responsive performance and genuine trail capability in a manageable package. Best known for its reliability, fuel efficiency, and approachable character, the RX 125 remains a popular choice for learning proper off-road riding technique.
- Capacity
- 124.8 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 116.0 kg
- Seat height
- 830 mm
- Power
- 21.5 HP (15.8 kW)
What’s new for the 2011 Aprilia RX 125
vs the 2010| Spec | 2010 | 2011 |
|---|---|---|
| Wet weight | — | 120.0 kg (264.6 pounds) |
| Fuel capacity | — | 10.00 litres (2.64 US gallons) |
Other years
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2025
2026
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed primarily for light trail riding, green-laning, and off-road learning rather than speed or distance.
- Built for
- A nimble, playful small-capacity enduro that rewards momentum and finesse over outright power.
- Not ideal for
- Not suited for riders wanting high-speed touring, motorway cruising, or carrying a passenger in comfort.
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
- 21.5 HP (15.8 kW)
- Torque
- 16.0 Nm (1.6 kgf-m)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.1853 HP/kg (dry)
- Bore x stroke
- 54.0 x 54.5 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Electronics to capacitive discharge CDI
- Lubrication system
- Separate mixing with variable displacement, volumetric pump.
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multi-plate wet clutch.
Performance
- Top speed
- 120.0 km/h (74.6 mph)
Dimensions & weight
- Wheelbase
- 1480 mm
- Overall length
- 2165 mm
- Overall width
- 850 mm
- Overall height
- 1414 mm
- Seat height
- 830 mm
- Dry weight
- 116.0 kg
- Wet weight
- 120.0 kg
- Fuel capacity
- 10.00 litres
- Reserve fuel capacity
- 1.30 litres
- Ground clearance
- Not on record - add it
Chassis & suspension
- Frame
- High strength steel frame with double trellis beam and double cradle. Detachable seat frame.
- Front suspension
- 40 mm upside down hydraulic fork. Wheel travel 260 mm.
- Rear suspension
- Steel swingarm. Hydraulic monoshock with piggy back cylinder. Wheel travel 270 mm.
- Front wheel travel
- 260 mm
- Rear wheel travel
- 270 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 220 mm
- Front tyre
- 110/70-17
- Rear tyre
- 150/60-17
Other
- Color options
- White
Specs last verified against published sources: .
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 | 1984 | 1994 | 2005 | 2011 | 2015 | 2026 |
|---|---|---|---|---|---|---|
| Capacity | 124 cc | 124 cc | 125 cc | 125 cc | 124 cc | 124 cc |
| Dry weight | 91 kg | 91 kg | 91 kg | 116 kg | 116 kg | 124 kg |
| Seat height | 925 mm | 925 mm | 925 mm | 830 mm | 830 mm | 905 mm |
| Fuel capacity | 8.5 L | 8.5 L | 12 L | 10 L | 10 L | 7 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 RX 125?
The 2011 Aprilia RX 125 has a Capacity of 124.8 ccm (7.62 cubic inches).
What engine power does the Aprilia RX 125 have?
The 2011 Aprilia RX 125 has a Power of 21.5 HP (15.8 kW).
How many gears does the Aprilia RX 125 have?
The 2011 Aprilia RX 125 has a Gearbox of 6-speed.
What is the torque of the Aprilia RX 125?
The 2011 Aprilia RX 125 has a Torque of 16.0 Nm (1.6 kgf-m or 11.8 ft.lbs).
How much does the Aprilia RX 125 weigh?
The 2011 Aprilia RX 125 has a Dry weight of 116.0 kg (255.7 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.