Who’s ready to rumble? If you’ve been looking for a sportbike that packs superbike DNA into a package that won’t require a weekly subscription to a chiropractor, the 2026 Aprilia RS 660 Factory has entered the chat. Sporting new fairings and a silhouette that might actually look sharper than its big brother, the RSV4, this middleweight contender is making a serious case for being the most charismatic parallel twin on the market.
Superbike Soul in a Twin-Cylinder Heart
The magic starts with the 659cc parallel twin. Aprilia didn’t just build a budget engine; they essentially lopped off the front bank of the RSV4’s 65-degree V4 to create this 89-horsepower masterpiece. For 2026, larger throttle bodies and a higher rev limiter give it a deeper, more aggressive growl. It’s a visceral experience that defies the “bland” reputation often associated with parallel twins.
Related editorial: 2026 Aprilia RSV4 and RS 660 Factory Reviews
Paired with a six-speed transmission and an electronic quickshifter that handles full-throttle upshifts and downshifts with buttery precision, the RS 660 Factory is a hoot to ride through the canyons of Southern California. Whether you’re carving up Palomar Mountain or navigating the urban sprawl, the 43 lb-ft of torque provides plenty of punch.
Related editorial: Top 5 Reasons the 2026 Aprilia RS 660 Factory Owns the Track
Ergonomics and Electronics
Surprisingly, this is a sportbike you can actually live with. The clip-ons are mounted relatively high, and while the seat is low—which can feel a bit cramped for riders over six feet—it remains remarkably practical for daily use.
The electronics suite is where Aprilia truly flexes. Controlled via a sharp (though slightly complex) color TFT dashboard, the bike features an IMU-powered arsenal:
- Adjustable Traction Control (with on-the-fly adjustments)
- Wheelie Control & Launch Control
- Cornering ABS
- Multiple Engine Maps
The Factory Edge: Öhlins and Handling
The “Factory” badge earns you premium Öhlins suspension with tool-less damping adjustments. While the setup feels a bit under-sprung for heavier riders, it delivers a racy, communicative feel on smooth asphalt. At a featherweight 400 lbs (fully fueled), the bike transitions between corners with telepathic ease.
There are a few quirks—the front Brembos showed a hint of fade during aggressive sessions, and the Öhlins ride can be jolting on choppy pavement—but as a total package of style, sound, and speed, the RS 660 Factory is hard to beat.
2026 Aprilia RS660 Factory Technical Specifications
| Feature | Specification |
| Engine | 659cc Parallel Twin, DOHC, 8-Valve |
| Horsepower | 89 hp |
| Torque | 43 lb-ft |
| Wet Weight | 400 lbs (approx.) |
| Fuel Capacity | 4.0 Gallons |
| Fuel Economy | 38–39 MPG (Tested) |
| Suspension (F/R) | Öhlins Fully Adjustable |
| Brakes | Dual 320mm Discs, Brembo Radial Calipers |
| Tires | Pirelli Diablo Rosso Corsa II |
| U.S. MSRP | $14,000 |
| Warranty | 2-Year Limited Warranty |
