Originally Posted by LukasM
As far as I know the ones from Chris Barnes (UK) are made in carbon and on request in aramid (aka kevlar). The latter would be a far superior material to use in this application - especially compared to fiberglass - due to it's abrasion resistance.
Personally I would go with that, and get the top layer in carbon to get the cool look as well.
Using of fiberglass or kevlar (aramid) is necessary, because only carbon is too breakable. It is ussualy combinated with some flexible material - kevlar (where low weight is needed) or some cheaper as glass or Diolen is. But for this usage is glass sufficient - but it would be made from aramid or Diolen too