BMW K1200S/R & K1300S/R Carbon Fiber Clutch Cover | Bestem

The Bestem carbon fiber clutch cover for the BMW K1200S/R and K1300S/R (SKU CBBM-K12S-CLC) is a direct-fit replacement for the stock cast-aluminum cover, molded from 100% pre-preg Toray carbon fiber and cured in an autoclave. It bolts to the factory mounting points and is finished with a proprietary UV-resistant clear coat backed by a lifetime warranty against sun-ray yellowing.

Which BMW models does this clutch cover fit?

One part covers all four of BMW's transverse inline-four K-bikes from this era:

• BMW K1200S (2004–2008)
• BMW K1200R (2005–2008)
• BMW K1300S (2009–2016)
• BMW K1300R (2009–2015)

These models share the same clutch cover geometry and bolt pattern, so fitment transfers directly across the range. The cover is molded to factory dimensions and reuses the OEM mounting points and hardware — no drilling, trimming, or shimming.

How is the Bestem clutch cover made?

Every Bestem cover starts as 100% pre-preg Toray carbon fiber — fabric that arrives from the supplier already impregnated with a precisely measured amount of resin. That laminate is laid into matched-metal tooling (metal molds on both faces of the part) and cured in an autoclave under heat and pressure. The result is a fully compacted, void-free laminate with a high fiber-to-resin ratio: consistent wall thickness, accurate bolt-hole placement, and none of the resin pooling, dry spots, or pinholes that show up in hand-laid, wet-lay, or resin-infused parts.

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 aerospace-grade technology and adds a superior UV-resistant coating on top of it.

Will a carbon fiber clutch cover turn yellow in the sun?

Sun-ray (UV) yellowing is the single most common defect riders see on carbon fiber parts: the clear coat ambers and clouds, and the weave underneath loses its depth. A clutch cover is especially exposed — it sits low on the bike with no fairing shading it, soaking up direct sun and engine heat cycles every ride.