The Rough Country 3" spacer lift kit for the Ford F250 Super Duty is designed to level the front with the rear of the truck. This bolt on lift kit does not affect the factory ride and provides increased ground clearance. The radius arm brackets are designed to provide proper caster that's crucial to maintaining the factory drivability and handling.Kit ComponentsCoil spring spacers Radius arm drop brackets Track bar drop bracket Hardware 4in lift blocks and u-bolts Four N3 Nitro shocksKit FeaturesLifetime Replacement WarrantyIncreased ground clearanceDesigned to level stanceView kit installation instructionsTire/Wheel Combos35x12.50 R20 on Factory 2035x12.50 R18 on Factory 1835x12.50 R17 on Factory 1735x12.50 R17 on 17x8.5 wheel with +0 or +1 offset35x12.50 R17 on 17x9 wheel with +0, +1, +18 or + 20 offset35x12.50 R18 on 18x8.5 wheel with +0 or +1 offset Minor Trimming35x12.50 R18 on 18x9 wheel with +0, +1, +18 or + 20 offset Minor Trimming35x12.50 R18 on 18x9 wheel with +0, +1, +18 or + 20 offset Minor Trimming35x12.50 R20 on 20x9 wheel with +0, +1, +18 or + 20 offset Minor Trimming35x12.50 R20 on 20x10 wheel with -25, -24, -19, or -18 offset Minor Trimming35x12.50 R22 on 22x10 wheel with -25, -24, -19 or -18 offset Minor Trimming35x12.50 R20 on 20x12 wheel with -44 offset Minor Trimming35x12.50 R22 on 22x12 wheel with -44 offset Minor Trimming