DOBINSONS FULL DIFF DROP KIT FOR ISUZU D-MAX 2ND GEN - DD21-533KKeeps CV angles at a good working angle Allows for lifts over 2. 0" Includes all necessary hardware, including machined spacers and nuts bolts Compliments Dobinsons lifts DD21 533K Instructions This is needed when lifting these IFS vehicles more than 2. 0", as it rotates down the front side of the differential carrier to help correct the drive line CV angles, reducing wear on those. May or may not work with some factory and or aftermarket skid plates,