Off Road Performance Parts and Accessories | CJC Off Road cjc off road offroad carli suspension dodge diesel performance cummins pure performance suspension installation thuren fabrication track bar back country king shocks Off Road Parts & Accessories At CJC Off Road , we specialize in performance suspension for heavy duty diesel trucks. Whether you’re looking to level your truck and improve street ride quality, or you want to smash through whoops in the desert, we have what you need.