anyone with an 8th gen civic ever have fiberglass fenders or bumpers? are they lighter?
I heard fitment can be rather poopy.
I got a fiberglass FD2 trunk and it fit ok, needs sanded and paint though. but its very very light. weighs almost nothing.

 

If the 8th gen is anything like the 5th and 6th gen, the bumper covers are plastic and already pretty light.

I think fiberglass would not be lighter by much if any at all.

Trunks and hoods are made out of metal so carbon fiber or fiberglass can be a decent weight savings if done right. However, if yer like my buddy who made his own fiberglass hood, it ends up being heavier as it's 3 times as thick as needed lol.

For the bumper covers, I don't think the hassle warrants it unless it's appearance that you are after. Weight savings is going to be nominal in my opinion.