14 August. Friday 2026
Aprilia SX 125 - 2025 Specifications and Reviews
The 2025 Aprilia SX 125 is a lightweight sportbike designed for novice and intermediate riders seeking an affordable entry point into performance riding. Known for its agile handling, aggressive styling, and nimble character, it excels in urban commuting and small-displacement racing. The digital dashboard and electric starting enhance its modern appeal for younger riders.
General information | |
| Color Options | Red Flash, Yellow Stark, Silver Alien Blue, Black Spider, White Wonder |
| Category | Super motard |
| Model | Aprilia SX 125 |
Engine and Transmission Specifications | |
| Starting | Electric |
| Emission Details | Euro 5 |
| Emission | 60.3 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel Consumption | 2.60 litres/100 km (38.5 km/l or 90.47 mpg) |
| Clutch | Multi plate wet |
| Final Drive | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling System | Liquid |
| Ignition | ECU Electronics Magneti Marelli MIUG4 ø 32 mm |
| Fuel Control | Double Overhead Cams/Twin Cam (DOHC) |
| Induction | Injection |
| Valves Per Cylinder | 4 |
| Bore x Stroke | 58.0 x 47.0 mm (2.3 x 1.9 inches) |
| Compression Ratio | 12.6:1 |
| Max Torque | 11.2 Nm (1.1 kgf-m or 8.3 ft.lbs) @ 8000 RPM |
| Engine Type | Single cylinder, four-stroke |
| Capacity: | 124.2 ccm (7.58 cubic inches) |
| | |
Physical measures and capacities | |
| Fuel Capacity | 7.00 litres (1.85 US gallons) |
| Wheelbase | 1425 mm (56.1 inches) |
| Overall Width | 820 mm (32.3 inches) |
| Overall Length | 2075 mm (81.7 inches) |
| Overall Height | 1140 mm (44.9 inches) |
| Seat Height | 880 mm (34.6 inches) If adjustable, lowest setting. |
| Wet Weight | 134.0 kg (295.4 pounds) |
| | |
Aprilia SX 125 dimensions and frame | |
| Wheels | Wire spoked. |
| Rear Brakes | Single disc. Floating calliper |
| Brake Disc Diameter | 220 mm (8.7 inches) |
| Front Brakes | Single disc. ABS. Floating calliper. |
| Rear Tyre | 130/70-R17 |
| Front Tyre | 100/80-R17 |
| Rear Wheel Travel | 210 mm (8.3 inches) |
| Rear Suspension | Steel swingarm, monoshock with progressive link system |
| Front Wheel Travel | 240 mm (9.4 inches) |
| Front Suspension | Upside down fork with Ø 41 mm stanchions. |
| Frame | Twin-tube steel |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | Report missing specs or required updates. |
| Instruments | Digital dashboard |
| Driveline | Drive ratio 13/62 |
| Lubrication system | Wet sump |
| Output | 14.8 HP (10.8 kW)) @ 10000 RPM |
| Year of manufacture | 2025 |
Performance Profile & Rider Fit
14.8 hp
Peak Power
Best For
Track30%
City85%
Cornering80%
Daily Riding65%
Touring20%
Passenger25%
Rider Profile
| Best For | This bike suits new and younger riders, including those on a learner or A1-equivalent licence, who want a light, approachable machine to build confidence on. |
| Purpose | It's built as a nimble supermoto-styled commuter for weaving through city traffic and having fun on twisty back roads rather than for outright speed. |
| Rider Fit | Its low weight and tall but slim seat make it easy to manage at a stop for shorter or less experienced riders, though the 880mm seat height requires reasonable inseam length. |
| Character | Playful, flickable, and eager to be thrown around corners, it rewards an energetic riding style over long-distance cruising. |
| Not Ideal For | It's not the right choice for riders wanting highway speed, long motorway touring comfort, or serious off-road capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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