The reasons for wanting or needing a rear block kit are vast. Before going into the details of our rear block kits we want to explain what a rear block is. Most every truck offered by a manufacturer comes with some amount of front-end rake. Rake is the height difference when comparing the front to the rear; essentially the front sits lower than the rear. Manufacturers do this to allow trucks not to sag too much when hauling loads. Unfortunately, this rake doesn’t always bypass the issue. Some drivers add so much weight the truck begins to sag too much even with the rake. This is where the rear block comes in. A rear block lifts the rear of the truck enough to allow a level drive while hauling heavy loads.