The non torsion bar drop (NTD) design sets this Rough Country 7.5" lift kit for the Chevy Silverado, GMC Sierra 2500HD, 3500HD apart from the others. This lift kit features front and rear crossmembers, lifted knuckles, differential skid plate, differential drop brackets, NTD brackets, sway bar link extensions, upper shock brackets, exgtended brake lines, bump stop brackets, e-brake brackets and all necessary hardware along with 4 Premium N2.0 shocks. Installation does not change the factory ride quality or track width. Unmatched ground clearance is achieved with the torsion bars remaining in the factory location. Axles maintain the factory position and angle. No drilling or modifying of the differential, drivetrain or exhaust.