Aprilia RX 125 - 2018 Specifications and Reviews

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.

4 stars Average rating: 4 from 1 votes
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General information

CategoryEnduro / offroad
Year2018
ModelAprilia RX 125

Engine and Transmission Specifications

Emission detailsEuro 4
DrivelinePrimary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
ClutchMulti-plate in oil bath.
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionElectronic with CDI capacity discharge
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Magneti Marelli M3G ø 32mm ECU
Valves per cylinder4
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression12.5:1
Torque10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Power15.00 HP (10.9 kW) @ 10500 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.80 ccm (7.62 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsAluminium spoked wheel.
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. Floating calliper
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc. Floating calliper
Rear tyre120/80-18
Front tyre90/90-21
Rear wheel travel220 mm (8.7 inches)
Rear SuspensionHydraulic monoshock absorber with progressive link system.
Front wheel travel240 mm (9.4 inches)
Front SuspensionØ 41 mm telescopic upside down fork
Frame typeAluminium perimeter
 
 

Physical measures and capacities

Fuel capacity7.50 litres (1.98 gallons)
Wheelbase1,350 mm (53.1 inches)
Seat height905 mm (35.6 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc120.0 kg (264.6 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric
Color optionsBlack/red

Performance Profile & Rider Fit

15 hp
Peak Power

Best For

Track10%
City45%
Cornering55%
Daily Riding40%
Touring20%
Passenger15%

Rider Profile

Best ForWell suited to beginner and learner riders thanks to its light weight, low power, and manageable seat height.
PurposeDesigned primarily for light trail riding, green-laning, and off-road learning rather than speed or distance.
Rider FitIts low dry weight and tall but slim enduro seat make it easy to manage for smaller or less experienced riders once moving, though the seat height can challenge shorter riders at a stop.
CharacterA nimble, playful small-capacity enduro that rewards momentum and finesse over outright power.
Not Ideal ForNot suited for riders wanting high-speed touring, motorway cruising, or carrying a passenger in comfort.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2018 Aprilia RX 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 905mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2018 Aprilia RX 125, with a cramped knee angle of around 80 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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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.
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