OEM Shiro front spoiler damage.

I'm experienced in cutting one up to fit in the garbage can, but that one was beyond repair.
It's a steel frame with a dense foam beneath a type of flexible urethane coating.

You might try cutting out the damaged areas using a sharp utility knife and rebuild the shape using
a dense foam, I've read that some use the pink construction foam at Home Depot for shaping custom parts.

Watch all the youtube videos you can about repairing urethane bumpers and see what products are used.
There are a few from 3M and possibly Evercoat. I did some similar research a few years ago but never
did any actual repairs.

Thanks for your input. I will research this more and see what I come up with. Thanks again.