Late reply but I think these are typically made from split moulds (front and back), laid up with pre pregs and then have internal bladder pressure from either air or an expanding foam like Expancell (powder that expands with heat).

Hi everybody! I would like to make "something similiar" to this:

 http://go2marine.files.wordpress.com/2008/05/edson-hightech-wheel.jpg

but I don't know how to do it? Carbon fiber braids? which process? Thank you!