If you are using the ZS axles and ZS knuckles these plates are designed to compensate for the slop elimination

Stainless steel front axles

Delrin upper arm outside balls

(2) Delrin 0 Degree Knuckles

(4) Spring Perch Hat Washers

Side Spring Set (4pair) BLACK=SUPER SOFT RED=SOFT BLUE=MED SILVER=HARD

FPM Roll Center Shims

Floating Pod Mount

R.1 Brass Chassis W/FPM

R.1 Triball rear pod with carbon plate 5 aluminum parts 1 carbon plate  Does not include shock mount or balls and shims

R.1 Shock Mount  (Rearward pivot point)

Ride height shims for adjusting rear axle

Center Spring Set BLACK=SUPER SOFT SILVER=SOFT

Electroplated Center Shock Shaft

This servo saver allows you to absorb the impacts on the wheels of your RTA and to avoid premature wear of your servo. This option also makes the entire steering system more reliable, stronger and more precise.

New version of the lexan friction plate. Its new shape allows easier access to the ESC to turn it on.  Moreover, the carbon is now chamfered to limit friction with the friction discs.