F150 Rear Blocks – Lift Blocks, U-Bolts & Kits for Leveled & Lifted Trucks

When to Use Rear Blocks on Your F-150

Most F-150s come with a factory rake of about 2 inches, meaning the rear sits higher than the front. If you install a 2 inch leveling kit up front, the truck is now level. If you want to add height to the rear to maintain a slight rake or go with a taller overall look, rear blocks are the answer. They're also commonly included with lift kits that raise both ends of the truck evenly.

Block Height Options

F-150 rear blocks are available in a range of heights, typically from 1 inch to 4 inches depending on your desired lift. Most complete F-150 lift kits use 2 to 3 inch rear blocks paired with a matching front lift to keep the truck balanced. Always match your rear block height to your front lift for the stance and geometry you want.

What Comes With a Rear Block Kit?

A complete rear block kit typically includes the blocks themselves (one per side), longer U-bolts to secure the axle to the leaf spring over the added block thickness, and sometimes center pin extensions or alignment dowels to keep everything properly located. Always use the U-bolts that come with the kit (or longer OEM-spec replacements), because original U-bolts won't be long enough to safely clamp over the added block height.

Rear Blocks vs. Add-A-Leaf and Helper Springs

Rear blocks add height without changing spring rate, so the ride quality stays the same as stock. Add-a-leaf kits and helper springs change the spring rate and can stiffen the ride significantly, but they also add load capacity. Blocks are the right choice when you want height without changing how the rear suspension feels. If you tow or haul heavy and need more load capacity, air springs are often a better solution than stiffer leaf packs.

F-150 Rear Blocks FAQ

Will rear blocks affect my ride quality? Quality blocks installed correctly have minimal impact on ride quality because they don't change spring rate, just position.

Are rear blocks safe on my F-150? Yes, when correctly installed with proper U-bolts. Avoid stacking blocks or using tall blocks (over 4 inches) without additional traction bars or axle-wrap correction, as axle wrap can become a concern at taller heights.

Should I replace my rear shocks when adding blocks? It's a good idea. Make sure your rear shocks are long enough to work correctly at the new ride height.