Not motorcycle, but I have done the same thing to reinforce a rotted cowl on my Camaro (see pic) and a bunch of other parts. There are a few catches when doing this. You need to have a good insulated coating between the metal and the CF (we used a few coasts of chassis saver paint and made sure the epoxy had good adhesion to it--did a bunch of tests). Since CF is a semi-conductor if it is applied directly on bare metal you run the risk of galvanic corrosion of the metal caused by the CF (NASA has a bunch of research online about this). It also helps to have a black layer under the CF since you can see through one layer between the threads (the black layer can be both insulator and cosmetic).
Make sure to use a clear epoxy resin.
Make sure to use NON prepreg CF (unless you want to bake it).
Make sure the resin is UV stable.
Top coat with UV inhibiting clearcoat.
The process we used was easy:
Scuff the insulating layer.
Apply epoxy to the entire surface.
Wait until the epoxy is tacky enough to hold the CF.
Apply the CF cloth, the tackiness will allow it to hold its shape on a irregular item.
Apply more (fresh) epoxy.
Wait for the epoxy to harden, if there are low spots scuff and apply more until there is a consistent coating.
Scuff and spray with clear.
A vacuum bag approach would be even better but more money...
We bought the supplies at a boat store in Etobicoke. Since then I found the aircraft supply place at the Brantford Airport which is less than half the cost.
