I've got this pair:
They would would need to be modified to fit a 1st gen frame but wouldn't be hard to do. $75 each or $125 for the pair.
I also have this one which is for a 1st gen frame: $30
That I don't have a pic of right now but it is a simply tube bumper, but it looks a lot like the one on top in this pic. The one I have is purple.
If you can read this, thank a teacher. If you can read it while pooping, thank Bill Gates!
"A girls butt hole is like a 9 volt battery. You know its wrong, but eventually you put your tongue on it."