Block & U-Bolt Kits
A lift block sits between the leaf pack and the axle to raise the rear. A taller block needs longer U-bolts, which is why these ship as a set rather than separately.
U-bolts stretch when they are torqued to spec, and that stretch is what produces the clamp load. They are a one-use fastener. Fitting a new block on the old ones is how an axle shifts under power.
If a block is not the right route
More under Lifting
Not sure this is the part you need?
Tell us the truck and what you are trying to end up with. Fresno, California, Monday to Friday.
1-888-230-1288
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