We did a lot of CF tidbits back in the day.I think the key is what type of resin/epoxy is used. Some are brittle, others flex some. My experience is the brittle stuff is much less expensive. If they can make baseball bats out of CF....
A bit off topic FWIW - Carbon Fiber Tow (bundles of thousands of CF strands) can be used with epoxy to reinforce repairs. Adds tremendous strength. Cheaper than CF cloth & sold in spools. TC
Problem was.....when we were making our DRs lighter.... is that you could only do so much. You did the exhaust, rear fender sub frame, passenger pegs and stuff here and there but that was basically it. I mean you wanted the rack for luggage but all the other stuff Suzuki needed to do...and they did with the 2nd Gen bikes.
So we bought rolls of fiber and used epoxy resin from West Marine....using the original parts as the plugs for the mold. We learned that certain items needed to be made thicker to reduce vibration...like turn signal mounts, etc.....while others could be made smaller. Custom brackets and stuff we're easy to make. We did it all and it felt good but it was mainly in our heads as the weight savings was good but in the overall theme of making the bike lighter it was nickle and dime stuff.