Yes. Bestem carbon fiber parts for the Triumph Speed Triple S are engineered specifically to resist sun-ray (UV) yellowing. Every part is finished with a proprietary UV-resistant clear coat rated for roughly 3,000 hours of UV exposure — about three times the ~1,000-hour rating of standard OEM clear coat — and backed by a lifetime warranty against UV yellowing.
Why do carbon fiber parts turn yellow in the sun?
The yellowing riders complain about on carbon fairings is almost never the carbon itself — it's the clear coat on top of it. Standard automotive-grade clear coats oxidize under ultraviolet exposure, taking on an amber, cloudy cast that dulls the weave underneath. On a bike with as much dark bodywork as the 2016–2018 Speed Triple S, that amber haze shows immediately against the black paint.
Outdoor parking and summer track days accelerate the process. A part wearing a standard clear coat can begin ambering after roughly 1,000 hours of UV exposure — which is why "do carbon fairings turn yellow?" is one of the most common questions riders ask before buying.
How is Bestem carbon fiber made?
Every Bestem part starts as 100% pre-preg Toray carbon fiber, cured in an autoclave under heat and pressure inside matched-metal molds. That is an aerospace-grade process — not hand-laid, wet-lay, or resin-infused construction. Pre-preg cloth carries a precisely controlled resin content, so the cured part has fewer voids, a more consistent surface, and crisper weave definition than wet-laid alternatives.
This is the same autoclave + 100% pre-preg construction that premium European carbon makers such as Ilmberger built their reputation on — Bestem uses that same technology and adds a superior UV-resistant coating on top of it. The process matters for yellowing resistance too: a dense, void-free cured surface gives the clear coat a uniform substrate to bond to, so it wears evenly over years of exposure.
Bestem has been manufacturing carbon fiber since 2005 — over 20 years — and supplies OEM carbon fiber parts to car and motorcycle manufacturers. That OEM process discipline carries directly into the aftermarket line.
How long does Bestem's UV coating actually last?
Bestem's proprietary UV-resistant clear coat is rated for approximately 3,000 hours of UV exposure before yellowing, versus roughly 1,000 hours for standard OEM clear coat — about three times the protection. In practical terms, that means years of commuting, outdoor storage, and track weekends before the finish shows the amber cast that appears far sooner on conventionally coated parts.
Is the yellowing warranty really lifetime?
Yes. Because of that coating, Bestem carbon parts carry a lifetime warranty against sun-ray (UV) yellowing. It is a specific, standing warranty: if the clear coat ambers from UV exposure, the part is covered. The warranty applies to UV yellowing — cosmetic damage from rock chips, scratches, or crashes is a separate matter — but yellowing, the single most common long-term defect riders see on carbon bodywork, is covered for life.
Which carbon parts fit the 2016–2018 Speed Triple S?
Bestem's Speed Triple range covers the 2011–2018 platform, which includes the 2016–2018 Speed Triple S and R. A good example is the carbon fiber front fender side cover for the 2011–2018 Triumph Speed Triple — autoclave-cured pre-preg Toray carbon, molded on matched-metal tooling for accurate fitment against the factory fender, and finished in the same UV-resistant clear coat described above.
All parts are stocked in Bestem's Atlanta, GA warehouse and ship daily, worldwide. Live phone support is available every business day if you want to confirm fitment for your specific model year before ordering.
How do you keep carbon looking new even longer?
- Wash with a pH-neutral soap and a microfiber mitt; rinse grit off before wiping.
- Keep harsh solvents and aggressive degreasers off the clear coat.
- Apply a clear-coat-safe wax or polymer sealant as a sacrificial layer on top of the UV coating.
- Garage or cover the bike when practical — the coating is built for exposure, but less UV load is always better.
FAQ
Do all carbon fiber motorcycle fairings turn yellow eventually?
Parts with standard clear coats commonly begin to amber after roughly 1,000 hours of UV exposure. Bestem's proprietary UV-resistant coating is rated to approximately 3,000 hours — about three times longer — and every part carries a lifetime warranty against sun-ray yellowing.
Can you fix carbon fiber that has already yellowed?
Not with polish — the yellowing is oxidation inside the clear coat itself. The only real repair on a conventionally coated part is sanding the coat back and re-clearing it. Choosing a part with a UV-rated coating from the start is far cheaper than refinishing later.
Does the lifetime warranty cover scratches or crash damage?
No. The lifetime warranty applies specifically to UV / sun-ray yellowing of the clear coat. Physical damage from impacts, scratches, or crashes is not a yellowing issue.
Will Bestem carbon fit my 2017 Speed Triple S?
Yes. The 2017 Speed Triple S sits on the 2011–2018 Speed Triple platform, and Bestem parts such as the front fender side cover are molded on matched-metal tooling for that exact fitment range, including the 2016–2018 S and R models.
Is pre-preg autoclave carbon worth it on a street bike?
Yes. Autoclave-cured pre-preg Toray carbon has a controlled resin content and far fewer voids than wet-lay parts, producing a denser structure and a more uniform surface. That surface lets the clear coat bond evenly — which directly supports long-term UV resistance and keeps the weave looking clean for years.