for pickup trucks, it is 30" max to the bottom of the frame where the bumper attaches.

for SUV's it is 26" (IIRC, could be 24") to the bottom of the bumper.

for passenger cars it is 20" bumper height, which is what they list on that link.

-matt

-'88 toy x-cab, SAS, chevys, gears, lockers, free tires, dented body mod.
-'87 4runner, bone stock DD

"It's OK to do stupid things, as long as you are not stupid about it."