2025 Aprilia SR 125 Technical Analysis & Specification Breakdown
At the heart of the 2025 Aprilia SR 125 scooter motorcycle, Aprilia relies on a 124.5 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 9.8 HP (7.1 kW) at 7,750 rpm while maximum torque reaches 9.7 Nm (7.2 lb-ft) at 5,750 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 78.7 HP per liter and a 2,000 rpm working window between peak torque (5,750 rpm) and peak power (7,750 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the SR 125 measures 115 kg (254 lbs) wet (curb), translating to a power-to-weight ratio of 0.09 HP/kg (11.73 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,365 mm (53.7 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank paired with a rated consumption of 2.4 L/100 km provides an estimated theoretical range of roughly 250 km (155 miles) between fill-ups.
Within MotoLibrary's Aprilia archive, this model family spans 4 indexed model years from 2021 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
78.7 HP/L
Power-to-Weight
0.09 HP/kg (11.73 kg/HP)
Power Band Window
5,750–7,750 rpm
Theoretical Range
~250 km (155 mi)
Engine
Displacement124.5 ccm (7.60 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsI-get engine
Power9.8 HP (7.1 kW)) @ 7750 RPM
Torque9.7 Nm (1.0 kgf-m or 7.2 ft.lbs) @ 5750 RPM
Compression9.2:1
Bore x Stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Valves/Cylinder3
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI
LubricationWet sump
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic centrifugal dry
DrivelineCVT
Performance
Fuel Consumption2.40 litres/100 km (41.7 km/l or 98.01 mpg)
Greenhouse Gases55.7 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 5
Chassis
Frame TypeTubular chassis with open single cradle
Front SuspensionHydraulic telescopic fork
Front Travel120 mm (4.7 inches)
Rear SuspensionHelical spring and shock absorber
Rear Travel102 mm (4.0 inches)
Wheelbase1365 mm (53.7 inches)
Ground Clearance155 mm (6.1 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre120/70-14
Front BrakesSingle disc. Combined braking system
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø140 mm (5.5 inches)
WheelsAlloy rims
Dimensions & Weight
Weight incl.115.0 kg (253.5 pounds)
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Overall Length1985 mm (78.1 inches)
Overall Width735 mm (28.9 inches)
Fuel Capacity6.00 litres (1.59 US gallons)
Other
StarterElectric
Color OptionsVibrant Blue, Power Red, Essence White, Storm Grey, Enigma Black
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
