Built around Aprilia's prototype - concept model motorcycle platform, the 2020 Aprilia RS 660 relies on a 660 cc (40.3 cu in) liquid-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 100 HP (73 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 151.5 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the RS 660 measures 169 kg (373 lbs) dry, translating to a power-to-weight ratio of 0.59 HP/kg (1.69 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,369 mm (53.9 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Aprilia archive, this model family spans 6 indexed model years from 2020 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
151.5 HP/L
Power-to-Weight
0.59 HP/kg (1.69 kg/HP)
Engine
Displacement660.0 ccm (40.27 cubic inches)
Engine TypeTwin, four-stroke
Power100.0 HP (73.0 kW))
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Performance
Emission DetailsEuro 5
Chassis
Frame TypeAluminum frame with the engine as a load-bearing element
Rake26.0°
Trail108 mm (4.3 inches)
Front SuspensionTelescopic fork
Front Travel160 mm (6.3 inches)
Rear SuspensionAluminium alloy swingarm.
Wheelbase1369 mm (53.9 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre180/55-17
Front BrakesDouble disc. ABS. Brembo
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc. ABS. Brembo.
Dimensions & Weight
Dry Weight169.0 kg (372.6 pounds)
Power/Weight0.5917 HP/kg
Other
StarterElectric
Color OptionsBlack/silver/red, blue/silver/red
InstrumentsDigital, color
LightTriple-LED head light
Notes
Traction control. Cornering ABS. Five riding modes. Clutchless shifting via bi-direction quickshifter. Wheelie control.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
