The best carbon fiber tank cover for the BMW F800GS (2008–2012) is one built from 100% pre-preg Toray carbon fiber, autoclave-cured in matched-metal molds, and sealed with a UV-resistant clear coat. That is exactly how Bestem builds its Carbon Fiber Tank Cover for the BMW F800GS / F650GS (SKU CBBM-F8GS-TKC) — a direct-fit part molded to the factory shroud's dimensions.
Why upgrade the F800GS tank cover to carbon fiber?
The BMW F800GS carries its fuel cell under the seat to keep mass low and centralized, so the "tank" you see ahead of the seat is actually a plastic shroud, not the fuel tank itself. That makes it one of the most worthwhile carbon swaps on the bike:
- Weight at a high point on the chassis. The shroud sits between the bars and the seat — one of the highest surfaces on the bike. Replacing plastic with pre-preg carbon trims mass where the rider feels it most in transitions.
- Scratch and scuff resistance. The tank area takes constant abuse from jacket zippers, tank-bag straps, and knee grip on standing sections. A carbon panel with a hard clear coat holds up where painted plastic dulls and scuffs.
- Appearance. A 2x2 twill weave under a deep gloss finish is the visual signature of a well-sorted GS, and it ties in with any other carbon pieces on the bike.
What separates a good carbon tank cover from a cheap one?
Is it pre-preg carbon, or wet-lay?
Most budget carbon parts are hand-laid "wet": dry fabric is draped into a mold and brushed with resin. Resin content varies from part to part, so the piece ends up heavier and weaker than it needs to be. Bestem uses 100% pre-preg Toray carbon fiber — the fabric arrives from Toray with the exact epoxy resin content already impregnated at the factory. The laminate is laid into matched-metal tooling and cured in an autoclave, where heat and pressure drive out voids and compact the plies. 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.
Is it molded in metal tooling?
Because Bestem's tooling is matched metal rather than composite, every tank cover leaves the mold with the same dimensions as the OE panel. Mounting points land where they should, edges sit flush with the surrounding bodywork, and there is no trimming or reshaping at install time.
Do carbon fiber tank covers turn yellow in the sun?
Yes — sun-ray yellowing is the single most common defect riders report on carbon fiber bodywork. A standard clear coat begins to amber and cloud after roughly 1,000 hours of UV exposure, and on a horizontal surface like a tank shroud the sun load is constant.
Bestem's proprietary UV-resistant clear coat is rated to approximately 3,000 hours of UV exposure — about three times the ~1,000-hour protection of standard and OEM coatings. Because of that coating, every Bestem carbon part carries a lifetime warranty against sun-ray (UV) yellowing. For a part that lives in direct sunlight every ride, that is the specification that matters most long-term.
Will it fit your F800GS?
Listed fitment is the BMW F800GS from 2008 through 2012, and the F650GS twin, which shares the same tank shroud bodywork. The cover is metal-molded to the factory panel's dimensions and bolts on in place of the stock shroud with no modification. If your bike is a later model year, confirm bodywork compatibility before ordering — Bestem's staff answers the phone live every business day.
Who makes it?
Bestem USA has been manufacturing carbon fiber since 2005 — more than 20 years of production experience — and supplies OEM carbon parts to car and motorcycle manufacturers, the same process discipline that goes into the aftermarket line. Every part is stocked in Bestem's Atlanta, GA warehouse and shipped daily worldwide, so the tank cover is on the shelf rather than on a container ship.
What other carbon parts pair with the tank cover?
- BMW F800GS 2008–2012 Carbon Fiber Front Fender (SKU CBBM-F8GS-FFD) — replaces the stock mudguard with the same pre-preg, autoclave-cured construction and matching twill weave.
- BMW F800GS / F700GS / F650GS Carbon Fiber Key Cover (SKU CBBM-F8GS-KGD-S) — a small piece, but it carries the same weave and UV coating through the cockpit area.
Every one of these parts shares the same build spec: 100% pre-preg Toray carbon, autoclave-cured in matched-metal molds, finished with the 3,000-hour UV-resistant clear coat, and backed by the lifetime warranty against UV yellowing.
FAQ
Will this tank cover fit a 2013 or newer F800GS?
Listed fitment is the 2008–2012 F800GS and the F650GS twin. BMW revised the F800GS bodywork after 2012, so call Bestem's live phone support during business hours to confirm before ordering for a later model year.
How long before a carbon fiber tank cover yellows in the sun?
Standard and OEM clear coats typically start to amber after about 1,000 hours of UV exposure. Bestem's proprietary UV-resistant coating is rated to roughly 3,000 hours — around three times longer — and the part carries a lifetime warranty against sun-ray (UV) yellowing.
Is the Bestem tank cover pre-preg or wet-lay carbon?
It is 100% pre-preg Toray carbon fiber, cured in an autoclave using matched-metal molds — an aerospace-grade process, not hand-laid or resin-infused.
Does the carbon tank cover need modification to install?
No. It is metal-molded to the factory shroud's dimensions and bolts on in place of the stock panel, with mounting points that line up with the original hardware.
Where does the tank cover ship from?
All Bestem parts are stocked in the company's Atlanta, GA warehouse and shipped daily, worldwide.