2021 Aprilia Tuono 660

The obvious choice to follow-up the RS660 in Aprilia’s lineup, the Noale-based factory has now officially released details on the 2021 Tuono 660. Taking a page from the RSV4/Tuono V4 playbook, the smaller siblings share the same relation, as the Tuono 660 is essentially a “stripped down” version of its RS brother, meant first and foremost to be ridden on the street.Everything You

Want To Know About The Aprilia RS660 (Except What It’s Like To Ride)

We use quotes around stripped down because, just like the V4 Tuono, there’s still quite a bit of plastic to be found with the Tuono 660, including the double fairing up front with the hidden winglets. What’s interesting is that, during the RS660 press briefing, Aprilia downplayed the winglet’s downforce effect and played up rider comfort, saying the winglets were primarily to channel hot air from the engine away from the rider. In its press materials, Aprilia still says the winglets move hot air away from the rider, but also “contributes to optimized stability at high speeds.”

Nonetheless, Aprilia is claiming the little Tuono to be the lightest bike in its class, with a claimed curb weight of 403 lbs. Combine that with its 100 hp output and Aprilia is also claiming the best power-to-weight ratio too. Stylistically, the relation between RS660 and Tuono 660 is clear. The triple-beam headlight is distinct, while the accompanying components beneath it are reduced on the Tuono. The LED headlight itself features a daylight sensor that will activate the low beams at night. In the rear, the turn signals will flash in an emergency braking situation. If you go with the optional IMU, the headlights will “bend” and light up the inside of a turn as you lean.2021 Aprilia

RS660 Review – First Ride

Other than looks, the biggest separator between RS and Tuono is the ergonomic triangle. You get a handlebar on the Tuono 660 instead of the clip-ons of the RS660. The handlebar is higher and slightly swept back, while the pegs are a little lower and covered with rubber (unlike the RS). Combined, you have a more relaxed riding position compared to the RS660.

From here, much of the components between the Tuono and RS are the same or very similar. The modular frame featuring spars that are bolted together (instead of welded) gives you the same 24.1º rake as the RS. One difference, however, is the frame features two anchor points to the engine on the Tuono – one less than the RS660 – for a slightly different handling characteristic. As before, the engine is a stressed member of the chassis.

2021 Aprilia RS660 Track Review

The swingarm is still bolted through the engine, and attached to it is a rebound- and spring preload-adjustable shock (no compression adjustment). Up front you have a Kayaba 41mm inverted fork, also adjustable for spring preload and rebound damping. Braking components are the same between RS and Tuono, which means two 320mm discs and radial calipers and master cylinder from Brembo. On the tire front, Pirelli outfits the bike with its Diablo Rosso Corsa II rubber, which compliments the bike’s street-first performance.

The star of the show, the 659cc parallel-Twin is small, compact, and packs a punch. Note the slotted swingarm pivot.

Of course, the highlight of the entire 660 range is the 659cc parallel-Twin engine. Featuring an 81mm bore, 13.5:1 compression ratio, DOHC, four valves per cylinder, and the distinct 270º firing order, it just oozes character as it revs mightily to its 100 hp (at the crank) peak and 11,500 rpm redline. You get 50 lb-ft of torque at 8,500 rpm, with 80% of that available as low as 4,000 rpm.

Just as the RS660, the Tuono 660 comes with the latest APRC suite and features Aprilia Traction Control, Wheelie Control, Cruise Control, Engine Brake control, and different engine map settings (three for street, two for track, just like the RS).

As alluded to earlier, one of the many options available on the Tuono 660 is the six-axis inertial measurement unit (IMU). By now we don’t need to explain what it does, but if you get it for the Tuono it then enables Cornering-ABS (with different levels of intervention), as well as the “bending” headlights mentioned at the top of the page. Another feature worth getting, in our opinion, is the optional quickshifter.

Lastly, all of the Tuono 660’s vital information can be seen through the color TFT display, which can show you both Road and Track screens, along with the Aprilia MIA multimedia platform that allows you to connect with your smartphone and use the bike’s screen to control several different functions, including calls, music, and even turn-by-turn navigation. The app also allows the rider to save completed trips and analyze the data directly in the app using geo-referenced telemetry.

The Tuono 660 will come in three colors: Acid Gold, Iridium Grey, and Concept Black. In the US, the Tuono 660 will be available at the end of March, with pricing set at $10,499 for Grey and Black. Opt for Acid Gold and you’ll be set back $10,699.

Aprilia Tuono 660 – Technical Data Sheet

Engine type Aprilia forward-facing parallel twin-cylinder, four stroke, liquid-cooled with radiator and water-oil heat exchanger, DOHC with silent chain on the right side, four valves per cylinder

Bore and stroke


81 x 63.93 mm


Engine capacity


659 cc


Compression ratio




Maximum power at crankshaft


100 HP (70 kW) at 10,500 rpm


Maximum torque at crankshaft


67.0 Nm (6.83 kgm) at 8,500 rpm


Power supply


Airbox with front air vent. 2 Æ48 mm throttle bodies, Ride-by-wire management








Wet sump




6-speed. Aprilia Quick Shift (AQS) System up and down (available as optional accessory)




Multiplate wet clutch with slipper system


Secondary drive


Chain, drive ratio 17/43


Electronic management


APRC suite that includes ATC (traction control), AWC (wheelie control), AEB (engine brake) AEM (engine mapping), ACC (cruise control)

5 riding modes (Road and Track, 3 pre-set and 2 customizable)





Aluminum dual beam chassis with removable seat-supporting subframe

Front suspension



Kayaba Æ 41 mm upside down fork with top out spring, Aluminum pins to fasten radial calipers. Rebound and spring preload adjustment on a single stanchion. Wheel travel: 110 mm


Rear suspension



Asymmetrical aluminum swingarm. Single shock and top out spring with rebound and spring pre-load adjustment. Wheel travel: 130 mm
Front brake



Rear brake




320 mm double disc; Brembo radial calipers with 4 horizontally opposed Æ 32 mm pistons. Radial pump and metal braided brake hose


220 mm diameter disc; Brembo caliper with two Æ 34 mm separate pistons. Master cylinder with separate reservoir and metal braided hose


Multimap ABS (Cornering ABS available as optional accessory)




Aluminum alloy Front: 3.5”X17” Rear: 5.5”X17”


Tires Radial tubeless, Front: 120/70 ZR 17 Rear: 180/55 ZR 17 (alternatively 180/60 ZR17)




Wheelbase: 53.9 inches / 1370 mm

Length: 78.5 inches / 1995 mm

Width: 31.6 inches / 805 mm

Saddle height: 32.2 inches / 820 mm

Headstock angle: 24.1°

Trail: 4.1 inches / 104.7 mm


Weight 403 lbs curb weight (172 lbs dry weight)

183 kg curb weight (169 kg dry weight)


Emissions compliance




Euro 5


4.9 liters/100 km


CO2 emissions


116 g/km


Fuel tank capacity


Color range


3.9 Gallons (including 1 Gallons reserve)

15 Liters (including 4-liter reserve)


Concept Black, Iridium Grey, Acid Gold

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