2pc Rear Lower Leveling Kit with U-Bolts | 1" Lift | For 2004-2015 Ford F150 F-150 - Black Steel Spacers Suspension Blocks [APPLICATIONS] 2004-2014 Ford F150. Includes 2 Lift Spacers / Blocks and U-Bolts (with hardware as shown in pictures) [SPECIFICATIONS] Install Location: Rear Lower | Lift Height: 1.0" (1.0 inch) | Actual Block Thickness: 1" (25mm) [MANUFACTURING] Blocks are made from High Quality Electrophoretic Treated Carbon Steel for optimal durability and fitment. Unlike other manufacturers that use inferior materials, ours are designed to be solid and not bend or warp under stress. [U Bolts] 4pc Extended ubolts included. Manufactured to Grade 8 Specifications. Bolts and Hardware is zinc plated for ultimate rust prevention <span class="a-text-bold">Lift Height</span>: 1.0&#034; Rear <span class="a-text-bold">U-Bolt Material</span>: Steel <span class="a-text-bold">Rear Block Material</span>: Steel <span class="a-text-bold">Block Coating: </span>Electrophoretic <span class="a-text-bold">Hardware Grade</span>: 8 <span class="a-text-bold">SUSPENSION GEOMETRY</span>: Your Ford does <span class="a-text-bold">not</span> have 1:1 suspension geometry so the measured thickness of the actual spacer will not be same as the advertised lift height. <span class="a-text-bold">LIFT HEIGHT</span>: The lift specified above is only applicable if you have not added / changed other suspension components. <span class="a-text-bold">ALIGNMENT</span>: It is necessary to get an alignment after the installation of this item to achieve the full lift height. Designed with an effortless install process in mind. Install will take approximately 2 to 4 hours with common hand tools. No cutting, welding, or any other form of modification required. Accommodates larger diameter tires. <span class="a-text-bold">U-BOLT SHAPE</span>:  These are square-shaped u-bolts. It is NECESSARY to check your current u-bolt shape to confirm it matches. <span class="a-text-bold">SAFETY / INSTALL WARNING</span>: Installation should only be performed by a trained professional. <span class="a-text-bold">LIFT HEIGHT</span>:<span class="a-text-bold"> </span>The lift specified above is only applicable if you have not added / changed other suspension components. <span class="a-text-bold">ALIGNMENT</span>: It is necessary to get an alignment after the installation of this item to achieve the full lift height. <span class="a-text-bold">FITMENT</span>: Use the Applications listed above. If your vehicle is not on the list, please see the &#034;Questions &amp; Answers&#034; section below.