Aprilia Tuono 660 upgrades
The Tuono 660 is the cheapest ticket into Aprilia's top-shelf electronics, wrapped in a naked that commutes Monday and does track Fridays. The half-fairing keeps it from being just another naked — and the RS 660's race ecosystem means the upgrade catalog is already deep.
Spec plate & generations
Claimed figures and the generation map. The year splits decide whether a part fits.
- Engine659 cc 270° parallel twin
- Power~95 hp claimed (base); 100–105 hp Factory
- Wet weight~403 lb claimed (base); Factory ~4 lb lighter
- Seat height32.3 in
- ElectronicsAPRC suite with cornering ABS; quickshifter optional on 2021–24 base, standard on Factory
Generation map
- Tuono 6602021–2024
Launch bike: ~95 hp claimed, preload/rebound-adjustable KYB fork, Sachs shock, quickshifter a ~$200 factory accessory rather than standard. 2021 builds fall under the 660 con-rod recall (NHTSA 21V-502) — verify by VIN.
- Tuono 660 Factory2022–2024
~100 hp claimed, fully adjustable KYB fork and Sachs reservoir shock, lithium battery (~4 lb lighter), quickshifter standard, shorter gearing. The trim most worth hunting used.
- 2025 refresh2025–present
US lineup goes Factory-only: ~105 hp claimed via 52 mm throttle bodies, Öhlins NIX fork + STX46 shock, launch control added. Suspension parts for 2021–24 bikes do not transfer.
Street path & track path
Two ordered sequences for the same machine. The order is the advice: spend where the next problem is, not where the catalog is loudest.
Street path
Tail tidy
The stock plate hanger is enormous — a fender eliminator is mod #1 on every naked and doubly so here. Flush LED signals while you're in there.
Quickshifter (base bikes)
2021–24 base bikes left the factory AQS as a ~$200 accessory the ECU already supports — the highest grin-per-dollar purchase on this bike. Buying used? Check whether it's already activated.
Protection
Frame sliders and engine case covers — the 660 twin's cases are shared with the RS 660, so GB Racing and Woodcraft coverage applies. Nakeds land on their sides; sliders earn their keep.
Slip-on
SC-Project, Akrapovič and LeoVince list the 660 platform — many systems share fitment with the RS 660 (verify the listing). Slip-ons keep the cat and run fine stock.
Comfort and contact
Shorty levers, grips, and a comfort seat — the stock plank is a top-three owner complaint for anyone doing real miles.
Suspension honesty
The 2021–24 base shock adjusts preload only. Spring the fork for your weight and either upgrade to Factory-spec adjustable units or an aftermarket shock (Öhlins, K-Tech, Nitron all list the 660).
Track path
Tires and tank grips
Supercorsa SP/Q5-class rubber in the stock 120/70-17 and 180/55-17 sizes, plus Stompgrip/TechSpec panels — the upright ergos make lock-on grip matter more, not less.
Brake consumables
Race pads, braided lines, high-temp fluid and a lever guard for the Brembo radials. Hardware is already good; consumables are the gap.
Fix the rear first
Base bikes: the preload-only shock is the weak point at pace — an adjustable aftermarket unit sprung for your weight is the single biggest track upgrade on this bike.
Case covers and sliders
Track orgs want covered cases: GB Racing/Woodcraft covers plus axle sliders. Twins Cup vendors (Spears Racing and co.) stock the 660 family.
Ergonomics and gearing
Rearsets (Bonamici, Woodcraft — most RS 660 sets have Tuono fitment, verify per listing) and a rear sprocket bump for tight tracks; base 2021 gearing is tall.
Full system and tune
Full exhaust plus a matched flash last — decat without a tune throws a CEL, and the money does more in suspension and tires until you're chasing tenths.
Parts notes for the Tuono 660
What fits and what the community runs, category by category. Typical street prices sit at the other end of the links.
Exhaust
SC-Project, Akrapovič, Arrow and LeoVince cover the 660 platform; many systems carry joint RS 660/Tuono 660 fitment but not all — the underbelly routing is shared, the tail is not. Full decat wants a tune to avoid the CEL.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Tune
Thin mail-in culture for Aprilia — a 660-experienced tuner or the accessory race ECU path for dedicated track builds. Most street owners stop at slip-on + stock map and lose little.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Suspension
Trim decides everything: 2021–24 base = preload-only shock (upgrade it), 2022–24 Factory = fully adjustable KYB/Sachs (spring it for your weight), 2025+ = Öhlins from the crate. Suspension listings are trim- and year-specific.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Levers
ASV and CRG shorty levers fit; the handlebar cockpit (vs the RS's clip-ons) means mirror, lever and perch fitment differs from RS 660 listings even where everything else matches.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Rearsets
The stock seat is thin and flat — comfort seats and gel retrofits are a recurring owner purchase for commuting duty. Try seat position tweaks before spending; the 660's triangle is roomier than the spec sheet suggests.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Crash Protection
GB Racing and Woodcraft case covers list the 660 engine; add frame sliders and bar-end weights — naked bikes drop onto bars and cases. Womet-Tech and R&G cover the budget-to-mid ladder.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Tail Tidy & Billet
Fender eliminator is mod #1. TST-style integrated tail lights and flush signals are widely catalogued for the 660 family — the Tuono tail is its own part number, not the RS's.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Quickshifter
The signature Tuono 660 cheap win: the ECU on 2021–24 base bikes already supports Aprilia's AQS up/down kit (~$200 accessory) — it's a plug-in, not an aftermarket retrofit. Factory trims have it standard.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Drivetrain
Same tall stock gearing story as the RS 660: +1 or +2 rear teeth wakes up a tight-track or city bike. 520 kits (Vortex/EK, Driven) are catalogued for the 660.
Some links may earn Unstocked a commission at no cost to you. Prices shown are typical street prices — always verify fitment and price at the retailer. Model-specific parts (exhausts, rearsets, bodywork) can run 2–3× between platforms — the sheet shows a typical figure.
Gotchas & fitment traps
The year splits and part quirks that eat money on this platform.
Cross-model interchange
Community-reported. Paddock folk knowledge, not manufacturer fitment data. Verify part numbers for your exact year and market before spending.
- RS 660 shares the engine and frame — community-reported crossover on engine covers, case protection, drivetrain and most engine-adjacent hardware; bodywork, subframe and cockpit parts do not swap.
- Factory-trim takeoff suspension (fully adjustable KYB fork, Sachs reservoir shock) is community-reported to fit 2021–24 base bikes as a budget upgrade path — verify year and lengths before buying used takeoffs.
Aprilia Tuono 660 FAQ
Can I add the quickshifter to a base Tuono 660?
Yes — Aprilia's AQS up/down quickshifter is a roughly $200 factory accessory on 2021–24 base bikes, and the ECU already supports it. It's the consensus first mod for this bike.
Do RS 660 parts fit the Tuono 660?
Engine, protection and drivetrain parts largely do (community-reported); bodywork, tail sections, screens and cockpit controls don't — the Tuono runs a handlebar and its own fairing. Check each listing's fitment line for your exact year.
Tuono 660 base or Factory — which is the better platform?
Factory, if the price gap is small: fully adjustable suspension, standard quickshifter, lighter battery and shorter gearing are exactly the first ~$1,500 of mods you'd do to a base bike anyway.
Is the Tuono 660 good on track?
Yes — it's an RS 660 with a handlebar. Sort the rear shock (base bikes), fit race pads and proper rubber, and it hangs with faired middleweights at track-day pace.
What recalls affect the Tuono 660?
The 2021 connecting-rod recall (NHTSA 21V-502) covered early Tuono 660s along with the RS 660 — Aprilia replaced complete engines. A VIN check should show it closed on any 2021 bike.
Read before you spend
Chapters from the manual that apply to the Tuono 660.
Builds on the Tuono 660
No documented builds on this platform yet. Plan the first one and share the sheet.
Prices are typical US street prices at publish time and drift with sales and supply — verify at the retailer. Fitment is advisory: always confirm the exact part number for your year, generation and market before buying.