4in. lift spindles made from ductile iron and e-coated. Comes with DOT approved brake lines and all necessary hardware. Recommended wheel size is 17in. or larger with 4 3/4 back spacing. Recommended tire size is 33x12.50. Will not fit stock wheels and tires.4IN. LIFT SPINDLES W/EXT. BRAKELINES (DOT APR)LIFT SPINDLES W/EXTENDED BRAKE LINES DOT COMPLIANTDuctile Iron ConstructionTrimming May Be Required For Optimal Fender Well ClearanceWill Clear 33 in. TireAxle Spindle; 4 in. Lift; w/Extended Brake Lines; Made From Ductile Iron; E-Coated; Incl. All Necessary Hardware4IN. LIFT SPINDLES