I think I came across a few products that appear to be a good UV protection coating. Check them out further down the page under “UV blocker”\
What do you intend to manufacture, and what materials are you thinking of using?
My preference is to use good primer and paint. No issues with UV.
If he is wanting to make fairings then thats what I would use myself.
The fairings are in the distant future, for now I am going to make some more simple glass and texalium undertails, exhaust hangers, and some simple cosmetic bits. But seeing as how my bike gets a lot of sun, cause I ride it 24/7 during the riding season, I am looking for something that would offer good protection and still be clear. So you can see the pretty fiber parts 
If you are using Eglass then it would make sense to use poly resin system, which would mean there shouldnt be any issues with UV.
polyester seems like a good cheap option and will probably use that for the not so important bits but what about when I make them out of epoxy? would it be suitable? This UV blocker says that it needs an epoxy primer, would any epoxy composite still need that primer?
Why mess around with UV blockers when any paint would do the job fine?
ya but I don’t want to paint over the parts.
UV stablised epoxy resin sytems are available, and commonly used in the manufacture of surf-boards.
You can clear gel coat the parts for the “depth” look and then clear varnish or top coat for the UV and smooth finish.
good luck with the tex…its a bitch to work with
clear poly gel coat and then some automotive clear coat is fine.
Auto clear coats have a UV additive in them to help keep the sun from burning the paint on cars.
To be honest…most motorcycles wont live long enough for it to be a problem
Carbon exhaust cans yellow in a year and no one really cries too much about that.
why is texalium a pain to work? is it a bit more ridgid form the coating?
Eglass we have here in the UK (from Italy) is very easy to work with, and feels a lot like real carbon cloth.
To save messing around with UV protection you could try using methacrylate poly sheeting resin system, which already has a high degree of UV protection built in.
This is available in hand lay up and RTM versions, and I would imagine the RTM resin with minor alterations would probably work very well for home producers using vacuum infusion process.