Aprilia Rx 125 - 2025 Specifications and Reviews

The 2025 Aprilia RX 125 is an entry-level sport bike designed for novice and younger riders seeking affordable performance and agility. Known for its lightweight handling, compact dimensions, and accessible riding position, it delivers responsive acceleration with a power-to-weight ratio of 0.1210 HP/kg. The bike's digital instrumentation and electric start provide modern convenience for everyday commuting and weekend fun.

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General information

Color OptionsBlack Spider, White Wonder
CategoryEnduro / offroad
 
 

Engine and Transmission Specifications

StartingElectric
Emission DetailsEuro 5
Emission60.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel Consumption2.60 litres/100 km (38.5 km/l or 90.47 mpg)
ClutchWet multi-plate
Final DriveChain (final drive)
Gearbox6-speed
Cooling SystemLiquid
IgnitionECU Electronics Magneti Marelli MIUG4 ø 32 mm
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
InductionInjection
Valves Per Cylinder4
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression Ratio12.6:1
Max Torque11.2 Nm (1.1 kgf-m or 8.3 ft.lbs) @ 8000 RPM
Max Power15.0 HP (10.9 kW)) @ 10000 RPM
Capacity:124.2 ccm (7.58 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity7.00 litres (1.85 US gallons)
Wheelbase1430 mm (56.3 inches)
Overall Width820 mm (32.3 inches)
Overall Length2145 mm (84.4 inches)
Overall Height1180 mm (46.5 inches)
Seat Height905 mm (35.6 inches) If adjustable, lowest setting.
Power/Weight Ratio0.1210 HP/kg
Wet Weight134.0 kg (295.4 pounds)
Dry Weight124.0 kg (273.4 pounds)

Aprilia Rx 125 dimensions and frame

WheelsWire spoked.
Rear BrakesSingle disc. Floating calliper
Brake Disc Diameter220 mm (8.7 inches)
Front BrakesSingle disc. Floating calliper. Front wheel only ABS.
Rear Tyre120/80-18
Front Tyre90/90-21
Rear Wheel Travel210 mm (8.3 inches)
Rear SuspensionSteel swingarm, monoshock with progressive link system
Front Wheel Travel240 mm (9.4 inches)
Front SuspensionØ 41 mm telescopic upside down fork
FrameTwin-tube, steel

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Update specsReport missing specs or required updates.
InstrumentsDigital
DrivelinePrimary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
Lubrication systemWet sump
Engine typeSingle cylinder, four-stroke
Model year2025
Motorcycle nameAprilia RX 125

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

2025 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 2025 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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