Lift spacer thickness and lift is not a 1 to 1 ratio due to the suspension geometry.The ratio of lift to spacer thickness is not one to one. Due to the design of the independent suspension of the truck, when you extend the strut by 1-1/4" (for 2" lift), 1-5/8" (for 2.5" lift) or 1-3/4” (for 3" lift) the angle of the strut becomes steeper allowing the truck to experience approximately 2", 2.5" or 3” of lift, respectively. It is the combination of extending the strut and the change in angle that gives the full lift. Once the kit is properly installed and you have the truck aligned, you will see the lift you expect. Remember that the installation is not complete until you have the truck aligned.Package includes:LIFT FRONT SPACERLIFT REAR BLOCKU BOLTOther hardware As pictures shownThis lift kit will raise the front of your vehicle by a true 3"and raise the rear2".Profession installation is highly recommended. An alignment is always recommended after altering the height of your vehicle.Please allow 1-3cm error due to manual measurement.