ReadyLIFT offers our premium fabricated steel rear shock extensions for 1999-2019 GM 1500 trucks and SUVs. These shock extensions are ideal for when you install a rear lift block and your shocks are too short. These extensions allow you to retain use of the factory shocks or factory length shocks. Heavy duty welded steel construction and includes new shock mounting hardware. Great addition to installing a ReadyLIFT rear block kit.