Originally Posted by Corse-R
Better than stock servo horns (really... don't remember if they come on the kit, the throttle seems that come) get some high quality for the spline number of your servo (the Serpent ones are the best I've seen).
Avoid like plague the aluminium ones, are just for looks only and they bend and break easily.
Like Chris said, the car does not come with servo horns.
I have only run aluminum servo horns on and off road. I have never bent, broken, twisted, tweaked stripped, torqued or damaged an aluminum servo horn.