Rough Country - 509.20-3-inch Suspension Lift Kit w/Premium N3 Shocks for Ford: 05-07 F250 Super Duty 4WD, 05-07 F350 Super Duty 4WD FEATURES: 100% bolt-on installation; Increased ground clearance; Radius arm drop brackets allow for properly set caster; Proper caster is crucial to maintaining factory handling and driveability KIT CONTENTS: Front: 3-inch lifted spacers, track bar bracket, and radius arm drop brackets; Rear: Lifted blocks and u-bolts; Shocks: (4) Premium N3 Shocks KIT CONTENTS: Front: 3-inch lifted spacers, track bar bracket, and radius arm drop brackets; Rear: Lifted blocks and u-bolts; Shocks: (4) Premium N3 Shocks SPECS: Installation Time: 3-4 hours; Backspacing: Factory; Recommended Tire Size: 35-by-12.50; Weight: 97.55-lbs; Superseded: 509S FITMENT: Ford: 05-07 F250 Super Duty 4WD, 05-07 F350 Super Duty 4WD