your nerfs broke, or your footpegs? in another thread you weren't sure which was which and stated you were looking for the pegs.
nerf bars are the bars with webing you see in alot of the pics. they protect your foot/leg from impact w/ trees and other quads and generally anything that might be looking to slip between the wheels and hurt you. they also protect you from slipping off the footpeg and feeding yourself, footfirst, under the rear wheel.
also, you stated the bolts are stripped, so you're looking to get new pegs? you know you can get a couple bolts from the hardware store, right?