Aprilia SX 125 2019 — Specifications

When Aprilia reintroduced the SX 125 to the catalog in 2018 after a long absence, the message was clear: the brand from Noale isn't seeking to conquer Sunday family outings. It targets young A1 license holders who dream of a supermotard without the budget for a 450 cm3 road-legal machine. The 2019 Aprilia SX 125 follows this line of machines designed for raw fun, direct heirs to the SXV twin-cylinder DNA that shook asphalt platforms fifteen years ago.

First visual impression: the motorcycle embraces its character. The taut lines, the high rolling components, the 41 mm inverted fork with 240 mm of travel — all of this speaks of a machine designed to absorb impacts, not to drop grandma at the station. The progressive-link monoshock rear suspension complements this work with 220 mm of stroke. On paper, the rolling chassis is serious, and this is where the Aprilia SX 125 technical specifications reveal its true ambitions. The perimeter steel frame, the contained wheelbase of 1,350 mm, the sport tires mounted on 17-inch spoke wheels: everything contributes to lively traction and natural agility in urban environments as well as on small winding courses.

Where the discussion heats up is on the engine side. Aprilia has definitively turned the page on two-stroke — which will make the teeth of those nostalgic for the Aprilia SX 125 2t and its characteristic liveliness grind. The 124.2 cm3 four-valve single-cylinder engine runs cleanly, complies with current Euro standards, but remains limited by law to 15 horsepower at 10,500 rpm and 10.9 Nm of torque at 8,250 rpm. Top speed is capped at 120 km/h. This is sufficient for fun in the city or on a training circuit, far from enough to compete with 300 or 400 cm3 machines on the open road. Those seeking Aprilia SX 125 derestricting will quickly find the legal limits of the exercise. But honesty dictates that this engine is not the star of the show: it is the precise six-speed gearbox that enhances the little available power.

What truly distinguishes this machine in its category is the ABS coupled with the anti-pitch function. On a 125 supermotard weighing 120 kg fully fueled, this is a first and not a gimmick. Direct competitors — KTM Duke 125, Honda CB125R — offer ABS, but not this specific function that secures heavy braking. With a 300 mm front disc and floating calipers at both wheels, the machine brakes hard and precisely. You can take serious angles, push the chassis to its limits, and the rolling chassis responds consistently. This is where the Aprilia SX 125 positive reviews are most often concentrated.

At 3,649 euros, the Aprilia SX 125 price positions it in the high end of the A1 category. The high seat at 880 mm will filter out smaller builds. But for a young rider who wants to learn supermotard technique on a well-bred chassis, equipped with real driving aids and a readable instrumentation with integrated maximum speed memory, the investment is justified. On the Aprilia SX 125 used market, prices remain sustained, which says something about the perceived value of the machine over time.