Product information updated on 2021-11-10, Manufactured by Air Lift - Part Number AIR:52445, 4 inch Angled Universal Air Spring Spacers/pair, Includes two 4-in. angled spacers and hardware. Works with all LoadLifter 5000 series and LoadLifter 7500 XL kits. , Air Lift universal air spring spacers are made with high-grade 1/4 inch steel and rated to handle more than 10 tons of force. Simply attach between the lower air spring bracket and the air spring.