The Tuff Country 4‑inch lift kit for 2001–2006 Chevy Silverado 1500HD 4x4 utilizes a one‑piece sub‑frame to provide strength and a lifted stance while aiming to preserve factory ride characteristics. The kit does not include shocks and requires new shocks at install; Tuff Country supports the system with a limited lifetime warranty and focus on dependable ride quality.
Tuff Country 01-06 Chevy Silverado 1500HD 4x4 4in Lift Kit (w/One Piece Sub Frame No Shocks)