ReadyLIFT now offers a quality CNC-machined billet Aluminum spacer kit designed to lower the TRD Pro Tundra skid plate when the differential is dropped/lowered in conjunction with a lift kit. Differential drop spacers and skid plate spacers are included in all ReadyLIFT Tundra SST and Complete lift kits. If you have a Tundra (non TRD Pro) and have a TRD PRO skid plate, or want to install one on your lifted truck with a dropped differential, this is the kit you want to use to be able to run the skid plate. Some 2018 Tundra TRD trucks are coming with a TRD PRO skid plate. If you want to lift the truck with a ReadyLIFT lift kit, this is the supplemental skid plate spacer assembly you will need. Designed to work with our TRD Pro Plus 2" lift kits (69-5420) only. Excludes cross member kits.