Originally Posted by
rctouringracer
I think the black gear was graphite impregnated for lubrication & the off white gear is nylon based, to wear better and leave less gunk on the counter gear as it wears.
Great...I put the black gear in.

by the way, I put the Durango springs on the B4...PIMP! They do not rub and the shocks feel like butter on a warm muffin!