Most Blazers and Suburbans sit low in the rear, and a lot of truck owners also want to relocate their axles forward or back a little for better fender clearance or for a bit more wheelbase and driveshaft length. This is the answer to both problems.
You're probably asking about the name. Well, we didn't want to call them blocks since they're really not a true block, they bolt to the spring pack just like another leaf. We didn't want to call them add a leaves since most people think add a leaves will stiffen the springs. So they're an add a leaf that won't stiffen the springs, they add "zero" to the rate.
are a true bolt in leaf, they are safe to use on the front or
rear suspension for extra ride height or to relocate the axle. To use the offset, you bolt the leaf to your spring using one of
the offset holes and cut the center pin off to bolt into the
leaf in the center hole. This will move your axle forward or
backward 1" or 1.5" depending on which hole you use and which
way you mount the leaf.
Doubler™ Dual Transfer Case
Greasable Rear Suspension Bushings