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Enduro Bikes

2018Aprilia RX 125

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The 2018 Aprilia RX 125 is a lightweight, agile commuter and entry-level sportbike designed for new riders and urban commuters seeking nimble handling and fuel efficiency. Its compact 120 kg frame, accessible 905 mm seat height, and responsive 125cc engine deliver approachable performance with genuine character. Best known for its sharp styling and European heritage, it combines practical daily usability with enough spirit to keep enthusiasts engaged.

Capacity: 124.8 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 116.0 kg
Seat height: 905 mm
Power: 15.0 HP (10.9 kW) @ 10500 RPM

⇄ Compare with another bike All model years

What’s new for the 2018 Aprilia RX 125

vs the 2017

Spec	2017	2018
Power	21.5 HP (15.8 kW)	15.0 HP (10.9 kW) @ 10500 RPM
Torque	16.0 Nm (1.6 kgf-m or 11.8 ft.lbs) @ 9750 RPM	10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Seat height	830 mm (32.7 inches)	905 mm (35.6 inches)
Fuel capacity	10.00 litres (2.64 US gallons)	7.50 litres (1.98 US gallons)
Front suspension	40 mm upside down hydraulic fork. Wheel travel 260 mm.	Ã˜ 41 mm telescopic upside down fork
Rear suspension	Steel swingarm. Hydraulic monoshock with piggy back cylinder. Wheel travel 270 mm.	Hydraulic monoshock absorber with progressive link system.
Front brakes	Single disc	Single disc. Floating calliper
Rear brakes	Single disc	Single disc. Floating calliper
Wheelbase	1480 mm (58.3 inches)	1350 mm (53.1 inches)

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

Off-road & trail88%

Cornering55%

City riding45%

Daily riding40%

Touring20%

Two-up15%

Track10%

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?

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Your height

Inseam (optional)

Units

At 905mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2018 Aprilia RX 125, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 124.8 ccm
Power: 15.0 HP (10.9 kW) @ 10500 RPM
CO2 Emissions: 4 CO2 g/km
Torque: 10.9 Nm (1.1 kgf-m) @ 8250 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.1293 HP/kg (dry)
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 in oil bath.

Performance

Top speed: 120.0 km/h (74.6 mph)

Dimensions & weight

Wheelbase: 1350 mm
Overall length: 2120 mm
Overall width: 835 mm
Overall height: 1412 mm
Seat height: 905 mm
Dry weight: 116.0 kg
Wet weight: 120.0 kg
Fuel capacity: 7.50 litres
Ground clearance: Not on record - add it

Chassis & suspension

Frame: Aluminium perimeter
Front suspension: Ã˜ 41 mm telescopic upside down fork
Rear suspension: Hydraulic monoshock absorber with progressive link system.
Front wheel travel: 240 mm
Rear wheel travel: 220 mm

Brakes & wheels

Front brakes: Single disc. Floating calliper
Front brakes diameter: 300 mm
Rear brakes: Single disc. Floating calliper
Rear brakes diameter: 220 mm
Front tyre: 90/90-21
Rear tyre: 120/80-18

Other

Color options: Black/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	1984	1994	2005	2015	2018	2026
Capacity	124 cc	124 cc	125 cc	124 cc	125 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	905 mm	905 mm
Fuel capacity	8.5 L	8.5 L	12 L	10 L	7.5 L	7 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB Review

The 2018 Aprilia RX 125 is a top-notch motorcycle that offers impressive performance and a sleek design. It's powered by a 125cc engine, providing plenty of power for both city streets and off-road adventures. The bike handles well, with responsive steering and a smooth ride. Its compact size and lightweight construction make it easy to maneuver, while the comfortable seat ensures a pleasant riding experience. Additionally, the RX 125 is equipped with advanced technology, including a digital instrument panel and LED lighting, adding to its modern appeal. Overall, the 2018 Aprilia RX 125 is a fantastic choice for riders looking for a stylish and capable motorcycle.

With its 125cc engine and advanced features, the 2018 Aprilia RX 125 is a standout option in the motorcycle market. Its performance, design, and technology make it a top contender in its class. Whether you're a beginner or experienced rider, the RX 125 offers a thrilling and comfortable riding experience. The combination of power, agility, and modern touches makes it a highly desirable option for anyone in the market for a versatile and stylish motorcycle.