Bestem's carbon fiber front fender spoiler winglets for the BMW S1000RR (2009–2014) and HP4 (2012–2014) are a direct bolt-on replacement for the factory plastic pieces, made from 100% pre-preg Toray carbon fiber, autoclave-cured in matched-metal molds, and finished in a 2x2 twill weave. They carry a lifetime warranty against sun-ray (UV) yellowing — the most common defect riders see on carbon bodywork.

What do front fender spoiler winglets do on the S1000RR and HP4?

Front fender spoiler winglets are the small aero panels mounted to the sides of the front fender. On the first-generation S1000RR and the HP4, they shape the airflow that spills off the fender at speed and give the front end the full factory-race silhouette the bike was designed around. On the stock bike these pieces are plastic; replacing them with genuine carbon fiber sharpens the look, adds stiffness, and matches other carbon components on the bike.

Which model years do these carbon winglets fit?

The winglets mount to the original attachment points on the stock front fender — no drilling, trimming, or adhesive required. They do not fit the 2015-and-later second-generation S1000RR, which uses a different fender molding.

How are Bestem's carbon fiber winglets made?

These winglets are built from 100% pre-preg Toray carbon fiber — fabric that arrives from the factory with the resin already impregnated at a precise, controlled ratio. The layup is cured in an autoclave under heat and pressure inside matched-metal tooling, which compresses the laminate, drives out voids, and produces a part with consistent wall thickness and crisp edges on both faces. This is the same autoclave-plus-pre-preg construction that premium European carbon makers such as Ilmberger built their reputation on; Bestem uses that same aerospace-grade technology and adds a superior UV-resistant coating on top. These parts are not wet-lay, not resin-infused, and have no fiberglass core hiding under a carbon skin.

Will these carbon winglets turn yellow in the sun?

UV yellowing is the number-one complaint riders have with carbon fiber fairings: the clear coat ambers and clouds after enough sun exposure. Bestem addresses this directly with a proprietary UV-resistant clear coat rated to roughly 3,000 hours of UV exposure, versus about 1,000 hours for standard OEM clear coat — around three times longer before sun-ray yellowing appears. Because of that coating, these winglets carry a lifetime warranty against sun-ray (UV) yellowing. On a small, fully exposed part at the very front of the bike, that protection matters more than anywhere else.

How much weight do carbon fender winglets save?

Honestly, on a component this size the savings are measured in grams, not pounds — carbon fiber's real advantages here are stiffness, the depth of the twill weave under clear coat, and long-term resistance to sun fade. If you're chasing serious weight reduction on a first-gen S1000RR, the fender winglets are a styling and durability upgrade first, and a weight upgrade second.

How do you install the front fender spoiler winglets?

Installation is a straightforward bolt-on job with basic hand tools. Remove the factory plastic pieces from the front fender, position the carbon winglets over the original mounting points, and refit the hardware. Most riders complete both sides in well under an hour. As with any carbon part, snug the fasteners evenly and avoid over-torquing into the laminate.

Why buy these winglets from Bestem USA?

Bestem has been manufacturing carbon fiber since 2005 — over 20 years — and supplies OEM carbon parts to car and motorcycle manufacturers, which is a different level of process control than a typical reseller. All parts are stocked in Bestem's Atlanta, GA warehouse and shipped daily, worldwide, with live phone support every business day from staff who actually know the parts. To keep the twill weave consistent across the bike, pair the winglets with Bestem's BMW S1000RR carbon fiber heel guards in matching twill.

FAQ

Do these winglets fit the 2015–2019 BMW S1000RR?

No. These winglets fit the first-generation S1000RR (2009–2014) and the HP4 (2012–2014). The 2015-and-later bikes use a redesigned front fender with different mounting geometry.

Are the winglets sold as a pair?

Yes. The kit includes both the left and right side winglets for the front fender.

Is the finish gloss or matte?

The winglets are finished in a 2x2 twill weave under a gloss, UV-resistant clear coat — the same proprietary coating rated to roughly 3,000 hours of UV exposure, about three times the ~1,000-hour rating of standard OEM clear coat.

How do I clean and care for carbon fiber winglets?

Wash with mild soap and water and a soft cloth or mitt. Avoid abrasive compounds and harsh solvents on the clear coat. A standard automotive wax safe on clear-coated finishes can be applied for extra protection and depth.

What does the lifetime warranty cover?

The lifetime warranty covers sun-ray (UV) yellowing of the clear coat — the ambering and clouding that sun exposure causes on ordinary carbon parts. It reflects the 3× UV resistance of Bestem's proprietary coating over standard OEM clear coat.