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Aprilia RS 660 Extrema

Make Model	Aprilia RS 660 Extrema
Year	2023
Engine	Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder
Capacity	659 cc / 40.2 cu-in
Bore x Stroke	81 x 63.93 mm
Compression Ratio	13.5: 1
Cooling System	Liquid cooled with radiator and water-oil heat exchanger
Lubrication	Wet sump
Exhaust	Street-legal exhaust system by SC Project
Emission	Euro 5 CO2 emissions - 116 g /km
Induction	Airbox with front air intake. 2 ∅48 mm throttle bodies, Ride-By-Wire management
Electronic Management	6-axis inertial platform, APRC suite which includes ATC (traction control, AWC (wheelie control), AEB (engine brake), AEM (engine map), ACC (cruise control) 5 Riding modes - (Road and Track, 3 fixed and 2 customizable)
Starting	Electric
Max Power	100 hp / 73.5 kW @ 10500 rpm
Max Torque	67.0 Nm / 6.83 kgm @ 8500 rpm
Clutch	Wet, multi-plate, slipper
Transmission	6 Speed, AQS Aprilia Quick Shift
Final Drive	Chain, with drive ratio: 17/43
Frame	Double beam aluminium frame with detachable rear seat
Front Suspension	Kayaba upside down fork ∅ 41 mm with counter spring, aluminium feet for fixing radial calipers. Adjustable for rebound, compression and spring preload.
Front Wheel Travel	120 mm / 4.7 in
Rear Suspension	Aluminium swingarm with asymmetrical trusses. Monoshock with adjustable counter spring: rebound and spring preload.
Rear Wheel Travel	130 mm / 5.1 in
Front Brakes	2x 320mm Brembo radial calipers with 4 32mm opposing pistons. Radial pump and metal braided brake hose
Rear Brakes	Single 220mm disc; Brembo calliper with 2 isolated ∅ 34mm pistons. Pump with integrated tank and metal braided hos
ABS System	ABS Cornering multimap
Front Wheel	In aluminium alloy 3.5 x17
Rear Wheel	In aluminium alloy 5.5 x17
Front Tyre	120/70 ZR 17 Tubeless radials
Rear Tyre	180/55 ZR 17 (alternatively 180/60 ZR17) Tubeless radials
Rake	24.1°
Trail	104.6 mm
Wheelbase	1370 mm / 53.9 in
Seat Height	815 mm / 32.0 in
Wet Weight	166 kg / 366 lbs
Fuel Capacity	15 Litres / 3.9 US gal

From a press release issued by Aprillia:

APRILIA RS 660 EXTREMA

A SPECIAL VERSION OF THE BEST-SELLING SPORT BIKE IN EUROPE MAKES ITS DÉBUT AT EICMA 2022: IT IS CHARACTERIZED BY AN EXCLUSIVE EQUIPMENT PACKAGE AND BEARS A NAME SYNONYMOUS WITH SPORTINESS

THE SC PROJECT EXHAUST SYSTEM, THE CARBON COMPONENTS, THE SINGLE-SEATER TAIL FAIRING, AND THE SOFTWARE FOR THE UPSIDE-DOWN GEARBOX MAKE RS 660 EXTREMA THE SPORTIEST AND LIGHTEST IN THE RANGE

Credit for the great success achieved by the RS 660, sold in 72 countries and currently the best-selling sport bike in Europe, goes to Aprilia’s fortunate 660 project, which skillfully interprets sportiness in an innovative and modern way through a range of lightweight and high performance bikes, as well as technical and electronic features usually reserved for models in higher categories to give expert riders a thrilling ride but at the same time accessible and fun even for everyday use by new riders.

Aprilia presents Extrema, the sportiest version of the current RS 660 model range. The name is reminiscent of that of the Aprilia 125 Extrema, one of the highest performances and fastest eighth-liter ever, manufactured from 1992 to 1994.

Thanks to its refined and new standard equipment, RS 660 Extrema tips the scale with an amazing curb weight of 166 kg and sets a new bar in terms of weight to power ratio (which comes in at 100 HP, a record in its class) which, as we all know, is fundamental for fun on the road and effective riding on the track.

This milestone is achieved by the special standard equipment which includes, first and foremost, a new and lighter street-legal exhaust system by SC Project with carbon silencer positioned on the right side (and no longer beneath the engine). It also comes with the black anodized aluminum silencer bracket which allows you to remove the passenger foot pegs, leading to even lighter weight. Also contributing to the overall reduction in weight are the front mudguard and the new belly pan with a brand-new design, both made of high-quality carbon.

The sporty nature of RS 660 Extrema is also emphasized by the single-seat tail fairing, which replaces the passenger seat to enhance the sleek design of the rear area. The passenger seat comes with the bike, which maintains its two-up riding approval. In addition to the standard electronics on the RS 660 (which include traction control, cornering ABS, engine brake, engine map, and wheelie control – all adjustable) RS 660 Extrema also has software that allows you to set up quick shift in upside-down configuration. This means that the gearbox can be configured completely autonomously, without replacing any bike component, in street or race version – ideal for track days. The new dedicated white and red livery is clearly sport-inspired and contributes to making it recognizable at a glance.