Autoclave carbon parts is completely different from resin bonded carbon parts.  Each carbon parts is molded in the vacuum and high temperature autoclave, and resin moisture is removed.  This advanced process makes each carbon fiber connect firmly, and therefore each parts becomes light weight and high stiffness.  In top motor sports categories such as Formula One and MotoGP, autoclave carbon parts are used in various components.

On the other hand, autoclave carbon itself is permeable.  In motor sports scenes, autoclave carbon parts are used in a short time and there is no need to be coated on the surface. But when using on the street, it needs to consider the effect under various ways of long-term usage such as temperature, rain, UV radiation and etc.

To cover this disadvantage, many autoclave carbon parts are coated several times and as a result, coating thickness gets thicker and parts itself puts on extra weight, then kills autoclave carbon characteristics.
Also too much coating loses "beautility" which autoclave carbon has.