The 2024 RS 660 Extrema version is based on the RS 660 platform, but adds a number of carbon fiber components that bring the weight down to 366 pounds dry for an attractive power-to-weight ratio, given the 100 hp produced by the 660's parallel twin.
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