i don't think i can give u the exact drop yet because i think they will drop a bit more once they break in but before i ever even drove it the springs gave me a 5/8 of an inch drop. just by looking at it i think they've dropped a bit more but i don't have the numbers. i will however take a measurement for you.

FYI the ride quality is really good. i no longer sway in corners and they are only a bit stiffer than stock on the freeway. now i havn't had any other springs on my truck but i would know i'd chose these again if given the choice.