frp has the fiberglass guards for the fmf pipes. cheap insurance compared to pipe cost. what i have found so far tho is take it off and clean beneath it after a muddy ride. dont want to keep that little bit of mud in there if u can help it. your pipe will love u for it. its easy to put on and take off. oh and if u get one u will smell it on the first ride. dont worry about it.
I've also have the Moose Guard on the KDX. Best Twenty dollar bill I spent on this bike. The Maier guard is cheap in comparison & the Carbon fiber are just to expensive for my taste. I took an extra 1/2 hour & polished it so it looks like chrome. http://community.webshots.com/user/250rdude101 for a few pics. :)