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A hitch mounted rack system having a lower base unit that includes a hitch beam and a hitch beam vertical support extending from the hitch beam; a cantilevered upper base unit that includes a support beam and a support beam vertical support extending from the support beam, and wherein the support be

A hitch mounted rack system having a lower base unit that includes a hitch beam and a hitch beam vertical support extending from the hitch beam; a cantilevered upper base unit that includes a support beam and a support beam vertical support extending from the support beam, and wherein the support beam vertical support is at least partially received within the hitch beam vertical support; a center-point adjustable sleeve that is adjusted in relation to the hitch beam vertical support and the support beam vertical support; and one or more crossbar assemblies positioned along the support beam.

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1. A hitch mounted rack system, comprising: a lower base unit, wherein said lower base unit includes an elongate hitch beam and an elongate hitch beam vertical support extending from said hitch beam, wherein a longitudinal axis of said hitch beam is substantially perpendicular to a longitudinal axis

1. A hitch mounted rack system, comprising: a lower base unit, wherein said lower base unit includes an elongate hitch beam and an elongate hitch beam vertical support extending from said hitch beam, wherein a longitudinal axis of said hitch beam is substantially perpendicular to a longitudinal axis of said hitch beam vertical support, and wherein said hitch beam vertical support includes a plurality of hitch beam vertical support apertures formed therethrough;an upper base unit, wherein said upper base unit includes an elongate support beam and an elongate support beam vertical support extending from said support beam, wherein a longitudinal axis of said support beam is substantially perpendicular to a longitudinal axis of said support beam vertical support, wherein said support beam vertical support includes a plurality of support beam vertical support apertures formed therethrough, and wherein said support beam vertical support is at least partially received within at least a portion of said hitch beam vertical support such that said longitudinal axis of said support beam is substantially coplanar with said longitudinal axis of said hitch beam and such that at least a portion of said support beam vertical support is adjustably slidable within at least a portion of said hitch beam vertical support;one or more attachment loops for support straps attached or coupled to opposing sides of said support beam vertical support;a center-point adjustable sleeve, wherein said center-point adjustable sleeve includes a sleeve having a plurality of sleeve apertures formed therethrough, such that at least certain of said sleeve apertures are allignable with certain of said hitch beam vertical support apertures and certain of said support beam vertical support apertures so as to allow a position of said sleeve to be adjusted in relation to said hitch beam vertical support and said support beam vertical support and maintained in a desired position when one or more pins or bolts is positioned through aligned, corresponding sleeve apertures, hitch beam vertical support apertures, and support beam vertical support apertures;one or more crossbar assemblies, wherein each crossbar assembly comprises a crossbar sleeve attached or coupled to a crossbar, wherein a longitudinal axis of said crossbar sleeve is perpendicular to a longitudinal axis of said crossbar, wherein said crossbar sleeve comprises a portion of material sized so as to be slidable along at least a portion of said support beam, and wherein a plurality of crossbar sleeve apertures are formed through said crossbar sleeve such that at least certain of said crossbar sleeve apertures can be aligned with at least certain of said support beam apertures; andsupport straps attachable between said attachment loops and said vehicle to limit movement of said hitch mounted rack system. 2. The hitch mounted rack system of claim 1, further comprising a hitch beam reinforcing corner attached or coupled so as to join at least a portion of said hitch beam to said hitch beam vertical support. 3. The hitch mounted rack system of claim 1, wherein said hitch beam comprises a portion of square, tubular material sized so as to be at least partially received within a vehicle tow hitch receiver tube. 4. The hitch mounted rack system of claim 1, wherein at least a portion of a first end of said hitch beam comprises a portion of square, tubular material sized so as to be at least partially received within a vehicle tow hitch receiver tube. 5. The hitch mounted rack system of claim 1, further comprising at least one hitch beam aperture formed through said hitch beam. 6. The hitch mounted rack system of claim 1, wherein said hitch beam vertical support comprises a portion of square, tubular material of a similar size to that of said hitch beam. 7. The hitch mounted rack system of claim 1, wherein a longitudinal axis of each hitch beam vertical support aperture is perpendicular to a longitudinal axis of said hitch beam vertical support. 8. The hitch mounted rack system of claim 1, wherein a first end of said hitch beam vertical support is permanently attached or coupled to said hitch beam proximate a second end of said hitch beam. 9. The hitch mounted rack system of claim 1, further comprising a support beam reinforcing corner attached or coupled so as to join at least a portion of said support beam to said support beam vertical support. 10. The hitch mounted rack system of claim 1, wherein said support beam vertical support comprises a portion of square, tubular material sized so as to be at least partially received within at least a portion of said hitch beam vertical support. 11. The hitch mounted rack system of claim 1, wherein a longitudinal axis of each support beam vertical support aperture is perpendicular to a longitudinal axis of said support beam vertical support. 12. The hitch mounted rack system of claim 1, wherein said sleeve comprises a portion of square, tubular material sized so as to receive at least a portion of said hitch beam vertical support within said sleeve, such that said sleeve is slidable along at least a portion of said hitch beam vertical support. 13. The hitch mounted rack system of claim 1, wherein said center-point adjustable sleeve further comprises an adjustment plate permanently attached or coupled to said sleeve. 14. The hitch mounted rack system of claim 13, wherein said adjustment plate comprises a first adjustment plate aperture formed therethrough proximate said first end and a second adjustment plate aperture formed therethrough proximate said second end. 15. The hitch mounted rack system of claim 1, wherein said center-point adjustable sleeve further comprises a handle. 16. The hitch mounted rack system of claim 1, wherein a position of each crossbar sleeve can be adjusted in relation to said support beam and maintained in a desired position relative to said support beam when one or more pins or bolts is positioned through aligned, corresponding crossbar sleeve apertures and support beam apertures. 17. The hitch mounted rack system of claim 1, wherein a crossbar end plate is permanently attached or coupled to each end of said crossbar. 18. The hitch mounted rack system of claim 17, wherein each crossbar end plate includes at least one crossbar plate aperture formed therethrough. 19. A hitch mounted rack system, comprising: a lower base unit, wherein said lower base unit includes an elongate hitch beam and an elongate hitch beam vertical support extending from said hitch beam, wherein a longitudinal axis of said hitch beam is substantially perpendicular to a longitudinal axis of said hitch beam vertical support, and wherein said hitch beam vertical support includes a plurality of hitch beam vertical support apertures formed therethrough;an upper base unit, wherein said upper base unit includes an elongate support beam and an elongate support beam vertical support extending from said support beam, wherein a longitudinal axis of said support beam is substantially perpendicular to a longitudinal axis of said support beam vertical support, wherein said support beam vertical support includes a plurality of support beam vertical support apertures formed therethrough, and wherein said support beam vertical support is at least partially received within at least a portion of said hitch beam vertical support such that said longitudinal axis of said support beam is substantially coplanar with said longitudinal axis of said hitch beam;a center-point adjustable sleeve, wherein said center-point adjustable sleeve includes a sleeve having a plurality of sleeve apertures formed therethrough, such that at least certain of said sleeve apertures are allignable with certain of said hitch beam vertical support apertures and certain of said support beam vertical support apertures so as to allow a position of said sleeve to be adjusted in relation to said hitch beam vertical support and said support beam vertical support and maintained in a desired position when one or more pins or bolts is positioned through aligned, corresponding sleeve apertures, hitch beam vertical support apertures, and support beam vertical support apertures; andone or more crossbar assemblies, wherein each crossbar assembly comprises a crossbar sleeve attached or coupled to a crossbar, wherein a longitudinal axis of said crossbar sleeve is perpendicular to a longitudinal axis of said crossbar, wherein said crossbar sleeve comprises a portion of material sized so as to be slidable along at least a portion of said support beam, and wherein a plurality of crossbar sleeve apertures are formed through said crossbar sleeve such that at least certain of said crossbar sleeve apertures can be aligned with at least certain of said support beam apertures.