14 August. Friday 2026
Aprilia RS 660 35KW - 2021 Specifications and Reviews
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.
General information | |
| Price as new | 3.6 Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike. |
| Category | Sport |
| Year | 2021 |
| Model | Aprilia RS 660 35kW |
Engine and Transmission Specifications | |
| Emission details | Euro 5 |
| Greenhouse gases | 113.7 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel consumption | 4.90 litres/100 km (20.4 km/l or 48.00 mpg) |
| Driveline | 17/43 chain |
| Clutch | Multi-plate wet clutch with mechanical slip system |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Airbox with front dynamic air intakes, two Ø48-mm throttle bodies |
| Valves per Cylinder | 4 |
| Bore x Stroke | 81.0 x 63.9 mm (3.2 x 2.5 inches) |
| Compression | 13.5:1 |
| Top speed | 235.0 km/h (146.0 mph) |
| Torque | 67.0 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 8500 RPM |
| Power | 46.9 HP (34.3 kW) @ 6000 RPM |
| Engine type | Twin, four-stroke |
| Capacity: | 659.0 ccm (40.21 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Pirelli Diablo Rosso Corsa tires |
| Rear brakes | Single disc. ABS. Brembo. |
| Diameter | 320 mm (12.6 inches) |
| Front brakes | Double disc. ABS. Brembo |
| Rear tire | 180/55-ZR17 |
| Front tire | 120/70-ZR17 |
| Rear wheel travel | 130 mm (5.1 inches) |
| Rear Suspension | Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking |
| Front wheel travel | 120 mm (4.7 inches) |
| Front Suspension | Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping. |
| Trail | 104 mm (4.1 inches) |
| Rake (fork angle) | 24.1° |
| Frame type | Aluminium dual beam chassis with removable seat support subframe |
| | |
Physical measures and capacities | |
| Fuel capacity | 15.00 litres (3.96 US gallons) |
| Wheelbase | 1370 mm (53.9 inches) |
| Overall width | 745 mm (29.3 inches) |
| Overall length | 1995 mm (78.5 inches) |
| Overall height | 1150 mm (45.3 inches) |
| Seat height | 820 mm (32.3 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.2778 HP/kg |
| Weight incl. oil, gas, etc | 183.0 kg (403.4 pounds) |
| Dry weight | 169.0 kg (372.6 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| 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). |
| Light | Triple-LED head light |
| Instruments | Digital, color |
| Starter | Electric |
| Color options | Acid gold, Lava red, Apex black |
Performance Profile & Rider Fit
46.9 hp
Peak Power
5.2s
0-60 mph
146 mph
Top Speed
Best For
Track70%
City65%
Cornering90%
Daily Riding60%
Touring45%
Passenger35%
Rider Profile
| Best For | This restricted-power variant of the RS 660 is well suited to newer licence holders or those on power-capped licences who still want sharp sportbike handling. |
| Purpose | 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. |
| Rider Fit | The low, compact chassis and moderate seat height make it accessible, though the sporty riding position still puts noticeable weight on the wrists during long stints. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
Shop This Bike
⚠ Safety Recalls (1)
ENGINE
Jul 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.
Source: NHTSA. View all Aprilia recalls →
Rider Reviews
Total comments: 1
MotorcycleDB Review
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.Add a Comment
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