These precision built and ultra capable 4" lift systems offer improved vehicle performance and allow clearance for 35" tires. These IFS systems are based around the tried and true high clearance design that has made BDS the go to when lifting 2009+ F150s now updated specifically for the redesigned 2021 Ford F150. These systems include everything necessary to correct suspension, steering and driveline geometry to maintain on-road handling while improving strength and offroad capability. Kits feature a pair of high strength crossmembers, along with differential skid plate, steering knuckles, differential relocation brackets, top mounted strut spacers, sway bar relocation, brake line relocation, driveshaft extension, alignment cam bolts, rear blocks, longer u-bolts and your choice of NX2 gas or FOX 2.0 gas shocks. All BDS kits include Factory Protection Plus for the ultimate extended warranty to include BDS's No Fine Print Warranty, ESC System compliance and a 5year-60,000mile drivetrain warranty to match the dealer. Improve the look and capability of your 2021 Ford F150.