This jeep has a very universal design. The triple king pin settings in the front coupler are made so it can be used with a tandem or tridem truck. There are 2 positions to pin on extra axles. The first position is in front of the tandem group. The axle at this position will create a very short tridem jeep. The same removable axle and pin-on frame can be installed at the rear of the jeep to form a long tridem jeep. The last configuration is to make 4 axle groupings. The extra long slide on the fifth wheel is meant to adjust the weight division between the truck and jeep. This universal design does come with an increase in tare weight. In total, this jeep can make 9 combinations.