Aprilia RS 125 2007 — Specifications

When Italy addresses young riders with such seriousness, it’s easy to understand why the Aprilia RS 125 continues to inspire generations of motorcyclists. This 2007 version doesn't pretend: its lines are directly inspired by the RSV-R 1000, the benchmark superbike from the Noale manufacturer. The Aprilia RS 125 fairing isn't just for impressing in the high school parking lot; it truly optimizes aerodynamics at a time when this refinement wasn't yet systematic in this displacement class.

What strikes you about this year is the quality of the braking equipment. A 40 mm diameter inverted fork, a double front disc with a radial four-piston caliper and a 320 mm track: all components that smelled of competition not long ago. On a 125, it’s rare at this price. The Aprilia RS 125 2T engine, a 124.80 cc two-stroke single-cylinder with a compression ratio of 12.5:1 and a square bore of 54 x 54.5 mm, delivers 28.60 horsepower at 10,500 rpm and 19 Nm at 10,250 rpm in a restricted configuration. Full power enthusiasts often talk about a power output close to 34 horsepower once derestricted, which explains why the Aprilia RS 125 full power 34cv remains a reference in garage discussions.

The Aprilia RS 125 top speed in legal configuration is around 155 km/h, which is honest for a machine weighing 137 kg fully fueled. The cast aluminum frame with inclined box section, rigid and lightweight, does the job seriously. The asymmetrical aluminum swingarm and the adjustable preload mono-shock complete a wheelbase geometry of 1,345 mm, calibrated for precision rather than highway comfort. The 805 mm seat remains accessible, the 14-liter tank correct for regional use.

Compared to the Yamaha TZR 125 or the Honda NSR 125 of the same era, the Aprilia stands out for its mechanical sophistication and the perceived quality of its finish. Its competitors show their age more, especially in terms of braking. On the Aprilia RS 125 used market, 2007 examples still sell well, whether through specialized networks or on classified ads. Aprilia RS 125 parts remain available from specialists, although some bodywork elements are becoming scarce: the Aprilia RS 125 deco kit and fairing elements have become coveted items, especially in original colors.

This year model clearly targets young A1 license holders who want to learn to ride fast without lying to themselves about their abilities. The two-stroke rewards those who work on their riding, who understand the narrow power curve of the 2T and who accept demanding maintenance. It's not a machine for leisurely Sunday morning rides: you need to warm up the oil, monitor the six-speed gearbox, care for the carburetion. In return, it offers sensations that few recent 125 4T can match. At 5,399 euros new, the Aprilia RS 125 price amply justified the premium positioning. Searching today for a well-maintained Aprilia RS 125 2T used remains an excellent gateway to a real understanding of motorcycle mechanics, far from the aseptic 125s that followed.