Sportbikes
2021Aprilia RS 660 35KW
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The 2021 Aprilia RS 660 35kW is a middleweight sport bike designed for riders seeking accessible performance and agile handling. Powered by a 659cc twin-cylinder engine producing 47 horsepower, it delivers responsive acceleration and a top speed of 235 km/h while maintaining user-friendly characteristics. Known for its refined engineering, lightweight chassis, and approachable nature, it suits both enthusiasts transitioning to sport bikes and experienced riders seeking daily-use performance.
- Capacity
- 659.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 169.0 kg
- Seat height
- 820 mm
- Power
- 46.9 HP (34.3 kW) @ 6000 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's built primarily for spirited cornering and sporty road riding rather than outright top-end speed, thanks to the detuned 46.9 HP twin in a lightweight chassis.
- Built for
- Agile, light, and eager to change direction, this bike rewards smooth inputs and flowing cornering lines more than brute acceleration.
- Not ideal for
- It's not the right choice for riders wanting high-speed highway overtakes, long-distance touring comfort, or any kind of off-road capability.
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
- 46.9 HP (34.3 kW) @ 6000 RPM
- Torque
- 67.0 Nm (6.8 kgf-m) @ 8500 RPM
- Engine type
- Parallel Twin, four-stroke
- Fuel consumption
- 4.90 litres/100 km (20.4 km/l)
- Power/weight ratio
- 0.2775 HP/kg (dry)
- Bore x stroke
- 81.0 x 63.9 mm
- Compression
- 13.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Eletric
- 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)
Dimensions & weight
- Wheelbase
- 1370 mm
- Overall length
- 1995 mm
- Overall width
- 745 mm
- Overall height
- 1150 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
- Reduced effect model. 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 customi
- Comments
- Reduced effect model. 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 | 2021 | 2022 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|
| Capacity | 659 cc | 659 cc | 659 cc | 659 cc | 659 cc |
| Dry weight | 169 kg | 169 kg | 169 kg | 169 kg | 169 kg |
| Seat height | 820 mm | 820 mm | 820 mm | 820 mm | 820 mm |
| Fuel capacity | 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 35KW?
The 2021 Aprilia RS 660 35KW has a Capacity of 659.0 ccm (40.21 cubic inches).
What engine power does the Aprilia RS 660 35KW have?
The 2021 Aprilia RS 660 35KW has a Power of 46.9 HP (34.3 kW) @ 6000 RPM.
How many gears does the Aprilia RS 660 35KW have?
The 2021 Aprilia RS 660 35KW has a Gearbox of 6-speed.
What is the torque of the Aprilia RS 660 35KW?
The 2021 Aprilia RS 660 35KW 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 35KW weigh?
The 2021 Aprilia RS 660 35KW has a Dry weight of 169.0 kg (372.6 pounds).
Shop this bike
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The 2021 Aprilia RS 660 35kW motorcycle is a sleek and powerful machine perfect for riders looking for a high-performance ride. With a 35kW engine, this motorcycle offers impressive speed and agility, making it an ideal choice for adrenaline junkies. The sleek design and advanced technology of the Aprilia RS 660 35kW make it a standout option in the market for riders who value both style and functionality. Whether you're conquering the open road or navigating city streets, this motorcycle is sure to deliver an exhilarating experience.
Overall, the 2021 Aprilia RS 660 35kW motorcycle offers a winning combination of power, style, and advanced technology. Riders seeking a high-performance ride will appreciate the 35kW engine's impressive speed and agility. With its sleek design and advanced features, the Aprilia RS 660 35kW is a standout option for those looking for both style and functionality in a motorcycle. Whether you're tackling long stretches of highway or weaving through urban traffic, this motorcycle promises to deliver an exciting and exhilarating ride.
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