Ridetech 11230109 - Manual (Page 10)

These Strong Arms come equipped with a changeable caster slug setup. This allows you to add or
remove caster from the front suspension, if desired. The caster slugs that come in the kit are setup to
put the control arm in the centered position, which is approximately 3 degrees of caster. The caster
slugs allow you to add or remove caster without having to use a stack of shims. If more or less caster
is desired, optional caster slugs can be purchased from your Ridetech dealer or Ridetech.
Caster Explained:
To understand caster you need to picture an imaginary line that runs through the upper ball joint and
extends through the lower ball joint. From the side view the imaginary line will tilt forward or
backward. The tilting of this imaginary line is defined as caster.
Caster is measured in degrees by using a caster camber gauge. If the imaginary line described above
tilts towards the back of the car, at the top, then you will have positive caster. If the imaginary line tilts
forward then you would have negative caster.
Positive caster provides the directional stability in your car. Too much positive caster will make the
steering effort difficult. Power steering will allow you to run more positive caster. Negative caster
requires less steering effort but can cause the car to wander down the highway.