There is very little that can be as frustrating on an R/C vehicle as slop in the suspension system. In the case of the 1/16th scale E-Revo, Slash & Rally, there is absolutely no slop adjustment for the suspension pivot balls. Once the axle carriers begin to wear at those balls, the camber, toe and caster angles don’t stay true, causing the vehicle to wander, making it very difficult to control. That is where RPM steps in. Our new 1/16th scale Axle Carriers have a unique pivot ball retention system that locks the pivot ball in place, yet still allows for adjustment due to wear.