2-4" Front Shock Extender Adjustable For GMC Chevy Sierra Silverado 2500 3500 HD New Design! Tough powdercoated 1/4" carbon steel shock extensions install in the factory lower front shock mount to greatly decrease the chance of over-extending the factory shocks. These shock extensions are designed to be use with factory shocks on the vehicle with 2-4" front lift. WHAT IS A LEVELING KIT? .
