Superlift spring sleeve kit for 9/16-inch shackle bolts, offered for 1988–1991 Blazer and Suburban 1/2 and 3/4 ton solid axle models. Sold as a pair of sleeves, this kit provides the correct sleeve diameter to work with 9/16 shackle bolts on older GM solid-axle vehicles, assisting in proper spring and shackle fitment during repairs or lift installations.
Superlift 73-91 GM Solid Axle Vehicles Spring Sleeve Kit for 9/16 Shackle Bolts