The Aprilia’s RS 660 represents the cutting edge of the new generation of middleweight sportbikes, where more accessible performance has replaced the maximum commitment speed of the old 600 supersport machines. Don’t misinterpret that to mean that the Aprilia is some fat and lazy motorcycle; with its 649cc 270-degree parallel-twin engine pumping out 100 hp at 10,500 rpm propelling a bike weighing just 403 pounds fully gased, the RS 660 has plenty of excitement on tap.
Aprilia parallel twin-cylinder forward facing, 4-stroke, liquid cooled with wateroil radiator and heat exchanger, double overhead camshafts (DOHC) with a silent chain on the right side, four valves per cylinder
81 mm
63.93 mm
659 cc
13.5:1
100 hp (73.5 kW) at 10500 rpm
67.0 Nm (6.83 kg) at 8500 rpm
Airbox with front dynamic air intakes, two Ø48-mm throttle bodies, Ride-byWire engine management
Electric
Wet sump
6 gears with Aprilia Quick Shift (AQS) up and down
Multi-plate wet clutch with mechanical slip system
Chain, with drive ratio: 17/43
Aluminium dual beam chassis with removable seat support subframe
Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping
Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking
Front ABS: double disc, diameter 320 mm Brembo radial callipers with four Ø32-mm opposing pistons. Radial pump and metal braided brake hose.
Rear: Ø220-mm disc; Brembo calliper with two Ø34-mm separate pistons. Pump with integrated tank and metal braided hose Multimap ABS Cornering