Ball joint/Ball link pliers
At some point you will need these to remove and/or replace ball pivots in the control arms or steering linkage, depending on your R/C model.
Multi-Tool
A small Multi-Tool will be your best friend. There’s no end to what jams this versatile tool has gotten me out of!
R/C Workstand
Yes, you will eventually need this, but no worries! A workstand is an absolute must while working on suspension and/or steering. Allows you to make faster repairs on your R/C, saving you time.