ReadyLift 66-2215 Suspension 2015+ Ford F-150 2.25in Front Strut Spacer Billet Aluminum Leveling Kit Max Lift 2.25" - Max Tire Diameter 35" Front Leveling Kit Crafted from CNC machined billet aluminum Offset design engineered specifically for 2015-UP F150 2WD/4WD trucks For the 2015-17 Ford F-150 2WD/4WD Note: Not for use on trucks that are factory pre-lifted/leveled or that have the &#039;off-road package&#039;.To ensure proper leveling kit fitment, using a plumb bob line (for a clean vertical) to measure from the center of the wheel hub to the bottom edge of the fender at the 12 oclock position while the wheels are pointing straight forward. If this measurement is greater than 22 then the truck already has some factory front lift compared to a base truck. For distances measuring greater than 22 as described above, #66-2215 Is Not the correct kit. <span class="a-text-bold">For distances measuring greater than 22 as described above, #66-2215</span> Is Not<span class="a-text-bold">the correct kit. Use #66-2052 1.5 Leveling Kit</span> to ensure proper front lift height and suspension geometry. Incorrectly using 66-2215 on a truck with 22 distance may result in UCA suspension component interference and/or excessive ball joint wear.