Tuff Country's 4" lift kit includes front spindle adapters, a-arm drop brackets, crossmember, differential drop brackets, bump stop spacers, sway bar brackets, brake line extensions and a combination of a 3" rear block kit with a set of rear add-a-leafs. Four SX6000 Hydro shocks are included. Shock boots sold separately. This design maintains a factory ride by using a combination of a-arm drop brackets and front spindle adapters. Front differential drop brackets and sway bar brackets help keep everything in proper alignment.