The Aprilia RS 660 is a masterclass in modern motorcycle engineering, filling the void between intimidating liter-bikes and entry-level trainers. It introduces a fresh perspective on the middleweight category by focusing on power-to-weight ratio and sophisticated electronics rather than raw, unmanageable displacement. The heart of the machine is a forward-facing parallel-twin engine that draws its DNA from the front bank of the legendary RSV4 1100, providing a punchy and charismatic character.
Ergonomically, the bike strikes a delicate balance that few in the supersport segment manage to achieve. While it maintains an aggressive profile, the clip-on handlebars are mounted above the triple clamp, and the footpegs are positioned to avoid cramping the rider. This makes it a viable candidate for both spirited canyon carving and the occasional commute, ensuring that performance doesn't always come at the cost of physical exhaustion.
Technology is where this machine truly separates itself from its peers. It comes equipped with a comprehensive six-axis IMU-based electronics suite usually reserved for flagship superbikes. Features like multi-level traction control, wheelie control, cornering ABS, and multiple engine maps allow riders to tailor the bike's behavior to their specific skill level or the prevailing road conditions with surgical precision.
The chassis is a lightweight aluminum dual-beam structure that uses the engine as a stressed member to keep mass to a minimum. Combined with adjustable Kayaba suspension and Brembo braking hardware, the bike offers a level of agility and feedback that encourages confidence in every corner. It feels incredibly narrow between the knees, allowing for effortless transitions and a feeling of total control over the front end.
Ultimately, this motorcycle represents a shift toward intelligent performance. It isn't just about being fast; it's about being usable, stylish, and technologically advanced. It appeals to the rider who values Italian flair and precision handling over the sheer brute force of a four-cylinder engine, marking a significant evolution in how middleweight sportbikes are designed and perceived.