Complete I-Rack System with Spare Tire Jack and Gas Can Mount for Jeep CJ and Wrangler YJ TJ LJ and JK 1955-2017 by Smittybilt. X. Usually ships the next business day. Formally known as the Intelligent Rack, the I-Rack is a smart and convenient way to store your hi-lift jack and some spare fuel on the trail. One of the biggest advantages to the I-rack is that you don't need to get a whole new tire carrier in order to gain this extra storage capacity. It includes mounts for a Jerry Can and Trail / High Lift jack.