Yes but if you buy slightly longer pins you can do a more standard style mud guard as well.. which is another awesome item to have on a dirt track :)
PS I hate the RPM front a-arms, I don't feel like I have the same amount of control as funny as that sounds. The rears though don't bother at all, I'm faster w/ the RPM's on than w/ the stock or extended out racing (Yes I tried them all and took an avg). It's nearly impossible to have a perfectly matched toe in w/ the erevo, and the ends are always stripping out on the rear turnbuckles.. I was EXTREMELY pleased that they were not needed w/ the RPM True Tracks installed.
