QSA 3.5" Lift Spindles. Compatible with 1997-2003 Ford F-150, Expedition, 2004 Ford F150 Heritage, and 98-02 Lincoln Navigator (2WD ONLY) See Description Below for applications Includes 1 set of 3.5" Lift Spindles (L+R) Includes Manufacturer's Warranty Minimum 16" Wheel Required (Max Backspacing of 4.75"). Will NOT fit stock 15" wheels. Track width will increase ~ 0.5"