When we designed our spring-under kit for the 2005-2023 Toyota Tacoma’s we wanted to take the guess work out and make a kit that’s easier to install. We did this by designing the front and rear spring hangers to bolt to the frame using the existing holes used by the factory mounts that are riveted on. Our mounts are considerably stronger than weld-on versions and we incorporated tabbing on the rear mounts for a x-member or fuel cell cradle for even more strength. This race and BITD 7100 class championship winning kit has been used over the years on serious prerunners and race trucks in the deserts of California and as far as the Dakar rally. A limited travel variation of this kit was also used on the 2017 Tacoma we raced in the 2017 Mint 400 in the 7300 class. This suspension kit is for the serious builder/enthusiast and is intended to be used with a bed cage and 2.5-3.0 x 16-18? travel shocks through the bed along with FOX or King bump stops. Their is quite a bit of work involved with installing these parts and is not an entry level install. Leaf springs are not included.