| General information | 
  
    | Model name | Aprilia RS 660 35kW | 
    | Year model | 2021 | 
    | Type | Sport | 
| Price as new | Euro 11050.  MSRP depends on country, taxes, accessories, etc. | 
    | Rating | 3.6   Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike. | 
    
        | Engine and transmission | 
  
    | Engine size | 659.0 ccm (40.21 cubic inches) | 
    | Type of engine | Twin, four-stroke | 
    | Effect | 46.9 HP (34.3  kW)) @ 6000 RPM | 
    | Torque | 67.0 Nm (6.8 kgf-m or 49.4 ft.lbs) @ 8500 RPM | 
    | Top speed | 235.0 km/h (146.0 mph) | 
    | Compression | 13.5:1 | 
    | Bore x stroke | 81.0 x 63.9 mm (3.2 x 2.5 inches) | 
    | Valves per cylinder | 4 | 
    | Fuel system | Injection. Airbox with front dynamic air intakes, two Ø48-mm throttle bodies | 
    | Fuel control | Double Overhead Cams/Twin Cam (DOHC) | 
    | Cooling system | Liquid | 
    | Gearbox | 6-speed | 
    | Transmission type | Chain  (final drive) | 
    | Clutch | Multi-plate wet clutch with mechanical slip system | 
    | Driveline | 17/43 chain | 
    | Fuel consumption | 4.90 litres/100 km (20.4 km/l or 48.00 mpg) | 
    | Greenhouse gases | 113.7 CO2 g/km. (CO2 - Carbon dioxide emission) | 
    | Emission details | Euro 5 | 
    
        | Chassis, suspension, brakes and wheels | 
  
    | Frame type | Aluminium dual beam chassis with removable seat support subframe | 
    | Rake (fork angle) | 24.1° | 
    | Trail | 104 mm (4.1 inches) | 
    | Front suspension | Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping. | 
    | Front wheel travel | 120 mm (4.7 inches) | 
    | Rear suspension | Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking | 
    | Rear wheel travel | 130 mm (5.1 inches) | 
    | Front tire | 120/70-ZR17 | 
    | Rear tire | 180/55-ZR17 | 
    | Front brakes | Double disc. ABS. Brembo | 
    | Diameter | 320 mm (12.6 inches) | 
    | Rear brakes | Single disc. ABS. Brembo. | 
    | Diameter | 220 mm (8.7 inches) | 
    | Wheels | Pirelli Diablo Rosso Corsa tires | 
    
        | Physical measures and capacities | 
  
    | Dry weight | 169.0 kg (372.6 pounds) | 
    | Weight incl. oil, gas, etc | 183.0 kg (403.4 pounds) | 
    | Power/weight ratio | 0.2778 HP/kg | 
    | Seat height | 820 mm (32.3 inches) If adjustable, lowest setting. | 
    | Overall height | 1150 mm (45.3 inches) | 
    | Overall length | 1995 mm (78.5 inches) | 
    | Overall width | 745 mm (29.3 inches) | 
    | Wheelbase | 1370 mm (53.9 inches) | 
    | Fuel capacity | 15.00 litres (3.96 US gallons) | 
    
        | Other specifications | 
  
    | Color options | Acid gold, Lava red, Apex black | 
    | Starter | Electric | 
    | Instruments | Digital, color | 
    | Light | Triple-LED head light | 
    | 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). | 
| Update specs | Report missing specs or required updates. | 
    
        | Further information | 
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 21 Aprilia RS 660 35kW discussion group or the general Aprilia discussion group. | 
| Related bikes | List related bikes for comparison of specs. | 
    
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