There are two styles of rooftop bicycle carriers available through your Chrysler dealership and Mopar: fork-mount and upright.  Fork-mount bike carriers work by removing the bike's front wheel and securing the front fork and rear wheel of the bike to the rack. For bikes that don't come equipped with a quick-release front wheel, upright bike carriers have straps that secure both wheels to the rack, plus a pair of "jaws" that attach to the bicycle frame and hold it in place. Properly secure all cargo.