Sportbikes
2021Aprilia RS 660
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The 2021 Aprilia RS 660 is a middleweight sport bike engineered for riders seeking accessible performance without compromise. Its 659cc twin-cylinder engine produces 99 horsepower with 67 Nm of torque, delivering engaging handling and agility on both road and track. Known for its sharp styling, precise ergonomics, and responsive middleweight character, it bridges the gap between beginner-friendly and serious sportbike capability.
- Capacity
- 659.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 169.0 kg
- Seat height
- 820 mm
- Power
- 98.6 HP (73.5 kW) @ 10500 RPM
What’s new for the 2021 Aprilia RS 660
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Power | 100.0 HP (73.0 kW) | 98.6 HP (73.5 kW) @ 10500 RPM |
| Top speed | — | 235.0 km/h (146.0 mph) |
| Front suspension | Telescopic fork | Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping. |
| Rear suspension | Aluminium alloy swingarm. | Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Designed for spirited backroad carving and occasional track days, with enough refinement for daily commuting.
- Built for
- A revvy, agile parallel-twin sportbike with modern electronics that balances playful handling with genuine performance credentials.
- Not ideal for
- Not a good fit for riders seeking off-road capability, plush long-distance comfort, or a relaxed upright riding position.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 659.0 ccm
- Power
- 98.6 HP (73.5 kW) @ 10500 RPM
- CO2 Emissions
- 106 CO2 g/km
- EPA Certificate No.
- MPVMC0.65KSU-011-R01
- EPA Est. Fuel Consumption
- 4.51 L/100km (52.2 US mpg)
- EPA CO Emissions
- 0.6 CO g/km
- Torque
- 67.0 Nm (6.8 kgf-m) @ 8500 RPM
- Engine type
- Parallel Twin, four-stroke
- Fuel consumption
- 4.10 litres/100 km (24.4 km/l)
- Power/weight ratio
- 0.5834 HP/kg (dry)
- Bore x stroke
- 81.0 x 63.9 mm
- Compression
- 13.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 4
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multi-plate wet clutch with mechanical slip system
Performance
- Top speed
- 235.0 km/h (146.0 mph)
- 0-60 mph
- 3.60 seconds
- 0-100 km/h (0-62 mph)
- 3.90 seconds
Dimensions & weight
- Wheelbase
- 1370 mm
- Seat height
- 820 mm
- Dry weight
- 169.0 kg
- Wet weight
- 183.0 kg
- Fuel capacity
- 15.00 litres
Chassis & suspension
- Frame
- Aluminium dual beam chassis with removable seat support subframe
- Front suspension
- Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping.
- Rear suspension
- Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking
- Front wheel travel
- 120 mm
- Rear wheel travel
- 130 mm
- Rake (fork angle)
- 24.1°
- Trail
- 104 mm
Brakes & wheels
- Front brakes
- Double disc. ABS. Brembo
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc. ABS. Brembo.
- ABS
- Yes
- Front tyre
- 120/70-ZR17
- Rear tyre
- 180/55-ZR17
Other
- Color options
- Acid gold, Lava red, Apex black
- Comments
- Six-axis inertial platform, APRC package containing ATC (traction control), AWC (wheelie control), AEB (engine braking), AEM (engine maps) and ACC (cruise control). 5 Riding modes (Road and Track, 3 fixed and 2 customisable).
- Fuel Tank Material
- Plastic
- Comments
- Six-axis inertial platform, APRC package containing ATC (traction control), AWC (wheelie control), AEB (engine braking), AEM (engine maps) and ACC (cruise control). 5 Riding modes (Road and Track, 3 fixed and 2 customisable).
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2020 | 2021 | 2022 | 2024 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 660 cc | 659 cc | 659 cc | 659 cc | 659 cc | 659 cc |
| Dry weight | 169 kg | 169 kg | 169 kg | 169 kg | 169 kg | 169 kg |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm | 820 mm | 820 mm |
| Fuel capacity | 15 L | 15 L | 15 L | 15 L | 15 L | 15 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Safety Recalls
⚠ 1 recall may applyENGINEJul 2021 · 21V502000
Aprilia is recalling certain 2021 RS 660 and Tuono 660 motorcycles. The engine crankshaft connecting rod may break due to improper heat-treatment.
Risk: A broken connecting rod can cause a sudden engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the engine, free of charge. Owner notification letters were mailed on July 9, 2021. Owners may contact Aprilia customer service at 1-212-380-4400. Aprilia's number for this recall is PA2ZZQ2107.
These recalls cover some 2021 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA or ask a dealer.
Source: NHTSA. View all Aprilia recalls →
Rider Reviews
Common questions
What is the engine size of the Aprilia RS 660?
The 2021 Aprilia RS 660 has a Capacity of 659.0 ccm (40.21 cubic inches).
What engine power does the Aprilia RS 660 have?
The 2021 Aprilia RS 660 has a Power of 98.6 HP (73.5 kW) @ 10500 RPM.
How many gears does the Aprilia RS 660 have?
The 2021 Aprilia RS 660 has a Gearbox of 6-speed.
What is the torque of the Aprilia RS 660?
The 2021 Aprilia RS 660 has a Torque of 67.0 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 8500 RPM.
How much does the Aprilia RS 660 weigh?
The 2021 Aprilia RS 660 has a Dry weight of 169.0 kg (372.6 pounds).
Shop this bike
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The 2021 Aprilia RS 660 is a stellar addition to the company's lineup. This sporty motorcycle boasts a powerful 660cc parallel-twin engine that delivers impressive performance on the road. With its lightweight and compact design, the RS 660 offers exceptional handling and agility, making it a thrill to ride through twists and turns. The sleek and modern aesthetic of the bike, combined with its advanced electronic features, makes it a top choice for riders looking for a high-performance machine.
Overall, the 2021 Aprilia RS 660 is a game-changer in the world of sport motorcycles. Its potent engine, nimble handling, and stylish design set it apart from the competition. Whether you're a seasoned rider or a newcomer to the sport biking scene, the RS 660 is sure to provide an exhilarating and memorable riding experience.
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