Heavy duty fabricated shackles for 2 1/2" wide spring, 1" longer than stock, 5.5" center to center. Note: Longer shackles allow for more droop travel but cause more driveshaft plunge. Cycle and check carefully. Autofab shackles come with bushings and sleeves for 9/16" bolt. Ranger 2wd,4wd and F150 2wd trucks.