The system

the amount of slop at the hinge-pins can cause your suspension settings to wander-as much as 0

Full metal gears and dual ball bearings

PC Programmer for Hitec Digital Servos

and also provide gentler handling

RPM R/C Products - Traxxas X-Maxx A-arm, Upper & Lower, Orange Electric Accessories Servo Extensions The systemRPM's X Maxx A arms are designed to be the strongest, lightest arms available. Starting with the upper A arm, they used their proven A arm designs from past successful builds to create an upper support structure sure to handle anything you can throw at it. The lower A arm has better ground clearance than stock A arms and has a cross section based off of the proven 1: 5 scale HPI Baja A arms, so you know they're tough. RPM has also created a double