No — the Tesla Cybertruck's B and C pillars are not glass. The glossy black sections you see between and behind the side windows are gloss-black trim appliqués fitted over the truck's stainless-steel exoskeleton. They only look like glass because they sit flush with the side glazing and reflect light the same way.
Are the Cybertruck's B and C pillars actually glass?
No. Both areas use a smooth, piano-black appliqué panel rather than structural glazing. The only real glass in that part of the truck is the window glass in the doors. The B-pillar trim sits between the front and rear door windows, and the C-pillar trim sits at the rear of the cab, just ahead of the stainless-steel sail panel that flows into the vault.
Because the appliqués are the same deep gloss black as the tinted windows, the whole side profile reads as one continuous band of "glass." It is a deliberate visual trick — the pillars are trim, not glazing.
What are the Cybertruck's pillar trims made of?
- B-pillar appliqué: a gloss-black trim panel spanning the gap between the front and rear door glass. This is also where Tesla mounts the electronic door-release buttons — the Cybertruck has no exterior door handles, so you touch the B-pillar every time you open the truck.
- C-pillar appliqué: a matching gloss-black trim section at the back of the cab, below the roofline and ahead of the bare stainless sail.
- Structure underneath: the Cybertruck's unpainted, ultra-hard 30X cold-rolled stainless-steel exoskeleton. The appliqués are cosmetic covers over that structure — they carry no glazing load.
Why do Cybertruck owners protect the pillar trim?
Piano-black trim is one of the most unforgiving surfaces on any vehicle. It shows every fingerprint, swipe mark, and car-wash swirl, and on the Cybertruck it is a genuine high-contact zone: the door-release buttons live on the B-pillar, so fingers and rings hit that panel several times a day. Add constant sun exposure on a large vertical black surface, and the factory trim starts to look tired long before the stainless body around it.
That combination — glass-like appearance, daily touch points, and easy scratching — is exactly why owners overlay the pillars with a harder, more durable material.
Will carbon fiber pillar covers turn yellow in the sun?
That depends entirely on the clear coat — and it is the right question to ask. Sun-ray (UV) yellowing is the single most common defect in exterior carbon fiber and coated trim: standard clear coats, including most OEM coatings, begin to amber and cloud after roughly 1,000 hours of UV exposure.
Bestem covers use a proprietary UV-resistant clear coat rated to approximately 3,000 hours of UV exposure — about three times the protection of a standard OEM coating. Because of that coating, every Bestem carbon part carries a lifetime warranty against sun-ray (UV) yellowing. On a truck that lives outdoors, that is the difference between trim that still looks deep black and glossy in year five and trim that has gone hazy by year two.
How are Bestem's Cybertruck pillar covers manufactured?
Our Carbon Fiber Protective Covers for the Cybertruck B & C pillars and door buttons (8-piece set, twill matte) are built to an aerospace-grade process, not a cosmetic overlay process:
- 100% pre-preg Toray carbon fiber — resin content is precisely controlled at the material level, with no hand-brushed wet layup.
- Autoclave-cured under heat and pressure for full consolidation, zero voids, and consistent panel thickness.
- Metal-molded (matched-metal tooling), so each of the eight pieces follows the exact contour of the factory appliqué, including the door-button surrounds.
This is the same autoclave plus 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.
Bestem has been manufacturing carbon fiber since 2005 and supplies OEM carbon parts to car and motorcycle manufacturers. All parts ship from our Atlanta, GA warehouse daily, worldwide, and our staff answers the phone every business day if you have a fitment question before you order.
FAQ
Are the Cybertruck's B-pillars real glass?
No. The B-pillar is a gloss-black trim appliqué over the stainless-steel body structure. It is designed to blend with the side windows, but it is trim, not glazing.
Why does the Cybertruck have buttons on the B-pillar?
The Cybertruck has no exterior door handles. Instead, an electronic door-release button is mounted on the B-pillar trim of each door — you press it, the door pops, and you pull it open by the edge.
Will pillar covers interfere with the door buttons?
No. The Bestem 8-piece set includes dedicated door-button surrounds molded on matched-metal tooling, so the covers follow the factory contours and the release buttons remain fully accessible and functional.
How long before exterior carbon fiber trim yellows?
With a standard clear coat, yellowing typically begins around 1,000 hours of UV exposure. Bestem's proprietary UV-resistant coating is rated to roughly 3,000 hours, and every part is backed by a lifetime warranty against sun-ray (UV) yellowing.
Do the covers require permanent modification to the truck?
No. The covers overlay the factory B- and C-pillar trim directly — no cutting, drilling, or alteration to the stainless-steel body.