Carbon fiber winglets for the Ducati Streetfighter V4 replace the stock biplane aero elements with lighter, stiffer pre-preg carbon versions that shave grams from the front end while preserving the factory downforce profile. They bolt to the OEM mounting points on 2020+ Streetfighter V4 and V4 S models and are finished with a UV-resistant clear coat to stop the sun-ray yellowing that plagues standard carbon fairings.

What do carbon fiber winglets do on the Streetfighter V4?

The Streetfighter V4's biplane winglets are functional aero, not just styling. Ducati rates the factory setup at roughly 28 kg of downforce at 270 km/h, splitting load between the two wing surfaces on each side. That downforce plants the front tire under hard acceleration and at high speed, reducing the tendency to loft the front wheel.

Swapping to carbon fiber keeps that aerodynamic geometry intact while dropping weight from the highest, most forward point of the bike — exactly where mass hurts steering response and front-end feel the most. Carbon winglets also add torsional stiffness compared to injection-molded plastic, so the wing profile holds its shape under aero load instead of flexing.

Are carbon winglets a direct fit on the 2020-2025 Streetfighter V4?

Yes. Quality carbon winglets are molded from the OEM part geometry and use the same fastener locations, so they install to the factory front fairing mounts with no drilling or modification. Confirm your model year before ordering:

Because these are aero components, fitment accuracy matters more than on a cosmetic panel: a poorly molded wing that sits proud of the fairing changes airflow and looks off. Parts pulled from precise molds seat flush against the front fairing edge.

Twill vs plain weave and pre-preg construction

Winglets are typically offered in 2x2 twill (the diagonal basketweave look) or plain weave (the tighter checkerboard). Both are cosmetic choices with identical strength when laid up the same way. What matters structurally is the layup method: pre-preg carbon — sheets pre-impregnated with a controlled resin ratio and autoclave-cured — yields a higher fiber-to-resin ratio, lower weight, and better consistency than wet-lay carbon.

For an exposed, high-visibility aero part, weave alignment and a defect-free clear coat are what separate a genuine carbon upgrade from a carbon-look shortcut.

Do carbon fiber winglets turn yellow in the sun?

Standard carbon parts — including much OEM carbon — do. The clear coat ambers and clouds under UV exposure, and winglets are especially vulnerable because they sit exposed at the front of the bike catching direct sun. This is the single most common defect riders report on carbon fairings.

Bestem addresses it with a proprietary UV-resistant coating engineered to protect the carbon weave from sun-ray yellowing. It withstands roughly 3,000 hours of UV exposure versus about 1,000 hours for standard OEM clear coat — three times the protection. Because of that coating, Bestem carbon parts carry a lifetime warranty against sun-ray (UV) yellowing.

Build the rest of your Streetfighter V4 carbon front end

Winglets pair naturally with matching carbon at the front of the bike. Bestem offers a carbon fiber front fender in plain-weave matte, a twill-weave glossy front fender, and a Streetfighter V4 tank cover to carry the weave up the bike. For a coordinated finish, match the weave and gloss level across parts.

Why source carbon from Bestem

Bestem has manufactured carbon fiber since 2005 — over 20 years — and supplies OEM carbon parts to car and motorcycle manufacturers, so the same production discipline goes into aftermarket pieces. All parts are stocked in the Atlanta, GA warehouse and ship daily, worldwide, with live phone support every business day.

FAQ

Do carbon fiber winglets fit the 2020-2021 Streetfighter V4?

Yes. Winglets molded from the OEM geometry bolt to the factory front fairing mounting points on 2020-2021 Streetfighter V4 and V4 S models with no drilling. Confirm your exact model year before ordering.

Do carbon winglets keep the factory downforce?

Yes. When molded to the OEM biplane profile, carbon winglets preserve the stock aerodynamic geometry and downforce while reducing weight at the front of the bike.

Will carbon fiber winglets turn yellow from sun exposure?

Standard carbon clear coat yellows under UV. Bestem uses a proprietary UV-resistant coating rated for about 3,000 hours of UV exposure versus roughly 1,000 for OEM clear coat, backed by a lifetime warranty against sun-ray yellowing.

Should I choose twill or plain weave winglets?

It's a cosmetic choice — twill has a diagonal basketweave look, plain weave a tighter checkerboard. Both have equal strength when laid up the same. Match the weave to the rest of your carbon parts.

Are pre-preg carbon winglets better than wet-lay?

Pre-preg carbon has a controlled resin ratio and is autoclave-cured, giving lower weight, higher fiber content, and more consistent quality than wet-lay construction.