You won't need that servo saver, and it probably wouldn't fit anyways. It's a very small area where the servo horn is. The T4 has a servo savor. With a MG or TG servo most of crank the servo saver down pretty tight so only the harder hits activate it. The T4 is a light truck so it's impacts with the pipe on the track aren't that hard on a metal or ti gear servo.
ARCTIC DOG RACING (Nitro free since 2009)
"Straights are for fast cars, curves are for fast drivers...."
8ight-E / 8ight-TE / T4 / Slash