Aprilia RS 660: middleweight sportbike with everyday usability

Responsible: ad hoc news Classics & Long-sellers Desk. Reviewed prior to publication on June 14, 2026 at 3:26 PM ET. Details in the imprint.

The Aprilia RS 660 has become one of the most talked-about middleweight sportbikes in the U.S., combining a compact parallel-twin engine with electronics usually reserved for larger superbikes. Aprilia presents the RS 660 as a road-focused sport machine that can handle commuting, canyon riding, and the occasional track day without the extreme ergonomics of a full-on superbike. In the U.S. market, the RS 660 has been listed with an MSRP around $11,499 depending on model year and color, positioning it between smaller entry-level bikes and larger 1000 cc superbikes.

What the Aprilia RS 660 offers U.S. riders

At the heart of the Aprilia RS 660 is a liquid-cooled 659 cc parallel-twin engine derived from the front bank of Aprilia's V4 architecture. The engine delivers roughly 100 hp in stock form, giving the bike strong midrange power without the high-revving intensity and heat of a liter-class machine. Power is managed through ride-by-wire throttle and multiple riding modes that adjust throttle response, traction control, and engine braking. This combination aims to offer both engaging performance for experienced riders and a manageable learning curve for those moving up from smaller displacement motorcycles.

The chassis is built around a lightweight aluminum frame that uses the engine as a stressed member, a design approach Aprilia has refined in its larger RSV4 superbikes. The RS 660 features a sporty but not extreme riding position, with relatively high clip-on bars and a seat height in the 31.5 to 32.9 inch range depending on model year and specific configuration. This gives riders a forward-leaning stance suitable for aggressive cornering while still allowing reasonable comfort for daily rides or short touring trips. The bike's wet weight is typically listed at around 400 lb, which helps with nimble handling in city traffic and on twisty backroads.

A major draw of the RS 660 is its electronics package. Standard equipment on many trims includes a quickshifter for clutchless upshifts and downshifts, multi-level traction control, cornering ABS, wheelie control, and cruise control. These systems are managed through an APRC (Aprilia Performance Ride Control) suite and accessed via a full-color TFT display. Riders can switch between preset riding modes tailored for road or track use and, on some versions, customize parameters individually. For a middleweight sportbike, this level of electronic support is typically associated with more expensive flagship models.

Braking components on the Aprilia RS 660 usually include dual front discs with radial-mount calipers and a single rear disc, paired with Bosch-based ABS. Suspension duties are handled by an upside-down front fork and a rear monoshock, both offering adjustability for preload and, on many models, rebound damping. These elements, together with relatively sporty geometry, give the RS 660 a sharp turn-in and stable mid-corner behavior that reviewers frequently highlight when comparing it with rivals in the same displacement class.

From a design standpoint, the RS 660 adopts aerodynamic bodywork with a distinctive dual-headlight front fairing and integrated winglet-style structures that Aprilia says help with stability at higher speeds. The bodywork also aims to direct hot air away from the rider, an important consideration for owners who use the bike in urban environments or warmer U.S. states. Color options vary by year, often including bold combinations that emphasize Aprilia's racing heritage alongside more understated schemes for riders who prefer a subtle appearance.

Aprilia markets the RS 660 in the U.S. through its network of authorized dealers, with availability depending on local inventory and model-year cycles. Some trims such as the RS 660 Extrema or special color editions are offered in limited numbers, appealing to enthusiasts who value exclusivity. Many U.S. buyers also look to accessories offered by Aprilia and third-party brands, including taller windscreens for better wind protection, tail-tidy kits, rear luggage solutions, and performance exhaust systems, allowing owners to tailor the bike toward either sport or light-touring use.

For riders comparing options in the middleweight class, the Aprilia RS 660 competes with models such as the Yamaha YZF-R7, Kawasaki Ninja 650, and Honda CBR650R. Compared with these, the RS 660 tends to stand out for its combination of power output, comprehensive electronics, and premium-feel chassis components. Its price point reflects that positioning, often running higher than some Japanese rivals but offering features like a bi-directional quickshifter and advanced traction control as standard equipment where competitors may reserve them for optional packages or not offer them at all.

Another factor for U.S. consumers is the bike's dual role as both an everyday machine and a weekend track companion. The engine's usable torque and relatively relaxed low-speed behavior make it approachable in dense traffic, while the upper rev range and supportive suspension come into play on open roads or closed circuits. Riders who do regular track days may look to upgrade brake pads or suspension settings, but the base configuration is widely considered a solid starting point without requiring extensive modifications out of the box.

In the wider Piaggio & C. SpA portfolio, the Aprilia RS 660 sits as a bridge between smaller-displacement entry models and high-end, race-oriented superbikes, giving the group a strong presence in the growing middleweight performance segment. Shares of Piaggio & C. SpA (DE000PIAG239, ticker PIAGF) last traded over the counter in the U.S. and were quoted at a recent indicative price level earlier this month; official primary listing data is published on European exchanges.

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.