Aprilia RS 660: Middleweight sportbike with everyday usability

Responsible: ad hoc news Lifestyle & Consumer Desk. Reviewed prior to publication on June 12, 2026 at 3:09 PM ET. Details in the imprint.

The Aprilia RS 660 is positioned as a middleweight sportbike that aims to blend genuine performance with day-to-day usability, sitting between entry-level machines and full-size superbikes in Piaggio & C. SpA's portfolio. In the US, Aprilia lists the RS 660 with a 659 cc liquid-cooled parallel-twin engine producing roughly 100 hp, paired with multiple electronic rider aids such as selectable riding modes and cornering ABS. New models are typically priced in the $11,000 to $12,000 MSRP range in the US market, depending on trim and color scheme, and are sold through authorized Aprilia motorcycle dealers and online powersports marketplaces. For riders who want a sport-oriented bike that can still manage commuter duty or weekend touring, the RS 660 is designed to be a compromise between full-on race replicas and more upright middleweight machines.

What the Aprilia RS 660 offers on paper and on the road

At the heart of the Aprilia RS 660 is a compact 659 cc parallel-twin engine derived from the front bank of the larger RSV4 powerplant, tuned for a balance of midrange torque and top-end power. Publicly available spec sheets for recent RS 660 model years generally quote a claimed output of around 100 hp at roughly 10,500 rpm and about 49 lb-ft of torque, sent through a 6-speed gearbox and chain final drive, giving the bike enough performance for spirited riding on back roads and occasional track days without the sheer intensity of a 1000 cc superbike. Curb weight figures commonly cited by distributors and reviewers place the RS 660 at roughly 400 pounds wet, relatively light for a fully faired street-legal middleweight, which contributes to its reputation for quick turn-in and approachable handling even for riders moving up from smaller displacement machines.

Aprilia equips the RS 660 with a set of electronic aids that are now expected in the middleweight sportbike class, including adjustable riding modes, traction control, wheelie control and engine braking settings, with cornering ABS on current versions. Higher trims and many US-market configurations include an up-and-down quickshifter and autoblipper, allowing clutchless shifts both up and down the gearbox when riding aggressively. These assists are managed through an electronic control unit and IMU that take into account lean angle and other parameters, intending to support the rider rather than fully override input, which helps appeal to enthusiasts who want modern safety features without losing the mechanical feel of a sportbike.

The chassis of the RS 660 centers on an aluminum frame and swingarm that emphasize lightness and stiffness, paired with fully adjustable or at least preload and rebound-adjustable suspension components depending on trim and model year. Front suspension is typically a USD fork from a major supplier, while the rear shock is mounted directly to the swingarm, both tuned from the factory for a mix of sporty response and street comfort. Braking hardware includes dual front discs with radial-mount calipers and a single rear disc, with ABS tuned for cornering performance on more recent versions, giving riders strong stopping power with additional safety margins on wet or uneven pavement. The combination of relatively low weight, strong brakes and a modern electronic package is a key part of how Aprilia markets the RS 660 against Japanese and European rivals in the same displacement bracket.

Ergonomically, the Aprilia RS 660 attempts to split the difference between a full crouch and upright naked-bike comfort, with clip-on handlebars mounted higher than on traditional supersport models and footpegs that are rearset but not extreme. This layout is meant to make it more realistic to spend an entire commuting week or a long weekend ride in the saddle without the neck and wrist strain often associated with race-replica ergonomics, while still providing a locked-in feeling when leaning through corners. Seat height is commonly quoted around the mid-30-inch range, which may be tall for shorter riders but is typical for modern middleweight sport machines, and the narrow waist of the bike helps some riders reach the ground more confidently. Aprilia's bodywork includes aerodynamic elements and a full fairing that directs wind around the rider at highway speeds, which can reduce fatigue on longer freeway stretches.

Styling has been a major talking point for the RS 660, with sharp, layered bodywork and distinctive lighting signatures that visually connect it to Aprilia's RSV4 superbike family while giving it its own identity. The front fairing incorporates a triple-headlight layout with LED lighting, complemented by LED indicators and a modern rear light design, helping visibility while also contributing to the characteristic Italian look. Aprilia has offered the RS 660 in several color options over recent years, including more traditional racing-inspired combinations and brighter, contemporary palettes that stand out in urban settings. The overall design is meant to appeal to riders who want a motorcycle that looks like a dedicated sport machine but can still be ridden daily, fitting into the broader Piaggio strategy of maintaining strong visual brand recognition across its two-wheeler lineup.

In terms of positioning within Piaggio & C. SpA's broader product family, the Aprilia RS 660 serves as the brand's core middleweight sport platform, sitting below larger-displacement track-focused bikes and above entry-level sport and naked options. It plays a role in attracting riders who may eventually move into other Aprilia or Piaggio Group products, including track-specialized machines or even more comfort-oriented models within the wider portfolio. For the US market specifically, the combination of modern electronics, around-100-hp performance, roughly 400-pound wet weight and a price band in the low-to-mid $11,000s puts the RS 660 in competition with middleweight sport offerings from Japanese and European manufacturers that emphasize street use as much as track potential. While individual purchase decisions depend on local dealer support and personal preference, the RS 660 has gained attention among reviewers for offering a sophisticated electronics package and distinctive styling at a relatively accessible displacement and size. Shares of Piaggio & C. SpA (DE000PIAG239, ticker PIAGF) last traded in the US over-the-counter market; recent indicative prices in unsponsored trading have been quoted around the mid-single-digit US dollar range as of early June 2026, though liquidity and quote availability can vary by platform.

This article was created with a.i. assistance and editorially reviewed. Product information is provided without warranty; prices and availability may change at any time. Not investment advice, not a buy or sell recommendation. Trading in securities carries risks up to the total loss of capital.