Hell Bent Steel strut extension leveling spacers will lift the front of your truck and allow for larger tires. The American-made all steel spacers will not deteriorate or decrease in height over time like nylon or polyurethane spacers will. This is the high-quality Ford F-150 leveling kit you have been searching for. Hell Bent Steel uses only the highest quality materials and most efficient processes. No other manufacture has a stronger commitment to quality and value. The Hell Bent Steel Ford F-150 leveling kit is easy to install in approximately 1-2 hours. The design and construction of the kit makes it safe to install and use. The spacers will not add excessive pressure or cause premature wear to your F-150's suspension. These spacers cost hundreds of dollars less than other lift kits, making the Hell Bent Steel Ford F-150 leveling kit the best value on the market. The leveling spacers will not affect your factory smooth ride. HBS leveling kits are designed and tested with 33 inch tires on factory wheels. However, we have many customers who have reported running 35 inch tires without any problems. Please read our leveling kit FAQ's for more information. NOTE: The thickness of the spacer is 1.625 inch. Due to the design of the independent suspension of the truck, when you extend the strut by 1.625 inch the angle of the strut becomes steeper allowing the truck to experience approximately 2.5 inches of lift. It is the combination of extending the strut and the change in angle that gives the 2.5 inches of lift. Remember that the installation is not complete until you have had the truck aligned, this is when you will see the true 2.5-inch lift that you are expecting.