Aprilia Tuono 125 2004 — Specifications

When Noale decided to play surgeon on its own RS 125, the result was the Tuono. Aprilia had already experimented with this formula on its larger displacement models by stripping the RSV’s fairings to create a roadster that intimidated inline superbikes in a straight line. Replicating this logic in a two-stroke 125 was a bold gamble, but the recipe works with remarkable consistency.

The transformation is more profound than a simple décarénage. The flanks of the RS have disappeared to make way for an engine guard and redesigned radiator cowls, and the forced air intakes now consist of two entries, reminiscent of the early RS models in the series. The cast aluminum twin-spar frame and aluminum swingarm receive a matte black finish that contrasts sharply with the gold rims borrowed directly from the RS SBK. The visual result is sharp, almost aggressive for a 125. The completely redesigned front forks refine the silhouette and give the motorcycle a more muscular line than its faired cousin. In terms of safety, the standard-fit protection sliders deserve a mention: they concretely limit damage in the event of a slide, a detail appreciated on a machine intended for young or learning riders.

The high handlebar positioned on risers fundamentally changes the perceived handling. With a wheelbase of 1345 mm and a dry weight of 129 kg, the machine pivots with an ease that recalls why roadsters have conquered urban riders. But be careful not to be fooled: the Aprilia Tuono 125 2T is not a touring motorcycle. Its 124.80 cc two-stroke single-cylinder engine develops 28.6 horsepower at 10,500 rpm, with a torque of 19 Nm peaking at 10,250 rpm. These figures mean nothing if read outside of their operating range. The engine is the same as the RS, without modification, which implies a six-speed gearbox to be exploited without hesitation and a high-revving operating range to access the true power. Below this threshold, the two-stroke feels sluggish. Above, the maximum speed of 145 km/h becomes accessible quickly enough to recall that 28 horsepower on 139 kg is a serious power-to-weight ratio.

On the chassis side, the inverted forks at the front and the cast aluminum swingarm provide a healthy base, inherited from the RS. The 110/70-ZR17 and 150/60-ZR17 tires are suitable for the intended use, and the single-disc braking system at both wheels remains within the standards of the category. This is not a machine to be ridden on the circuit every weekend, even though the architecture would allow it. The Tuono 125 positions itself more as a versatile tool: compact enough for the city thanks to its 805 mm seat height, sharp enough for small winding roads, and spectacular enough to appeal to those who want to stand out from the usual catalog. The flattened passenger seat improves the comfort of the second occupant compared to the RS, which is not negligible for mixed use.

Compared to a Derbi GPR Racing or a Gilera DNA from the same era, the Aprilia Tuono 125 requires more mechanical involvement and mastery to be exploited correctly. This is not a flaw in itself, it is a positioning. The motorcycle is aimed at a rider who knows what they want, who will not fear potential unlocking upon leaving the dealership, and who understands that a two-stroke demands respect. For those looking for an Aprilia Tuono 125 used today, the launch price of 4,569 euros at its release places the machine at the top of the segment, but the increasingly rare nature of these characterful two-strokes justifies the investment if the example is well maintained. A poorly maintained two-stroke engine forgives little.