Its not for the seal is for the FUken Rocks, my 07 YZ is Kained from this years handfull of races, the Dt tracks seem to sand blast the BEEgeezas out of everything.
On a bad day you get 10mm rocks in the dolomite they spread, so its put so many chunks in the 07 upper Fork legs im spewing, and they had plastic guards on the sliders too, but the TOP of them are chipped to shit.
Ihave since put them on the uppers of the Old girls in long strips to stop them getting chipped to shite ( may look poxy but cheaper than hard chroming and less HF. The lower legs i Have started using Duck tape strips, and after one meeting you can see how much damage that they take, maybe differant on sany loam MX i guess, but on the hard track by the end of the day it all shreads and is litteraly falling off.
UNless you out the Front GMC your going to cop a Sand blasting at best , rock throwing at the least. Im trying to get some of them Plastic covers from the US, like the Matchbox tracks to cover mine up properly, cheaper in the long run i think. But for KNow i have wet suit strip held on with Zip ties.