A vehicle-mounted bike rack may include a first rack arm having a post extending from a first end and an opening formed in a second end of the first rack arm. The bike rack may also include a second rack arm having a slot formed in a first end and on opening formed in a second end of the second rack arm, and a cross bar extending substantially perpendicularly with the first and the second rack arms, and wherein the cross bar is received in the openings of the first and second rack arms, such that each of the first rack arm and second rack arm are pivotable about the cross bar. The first and second rack arms may be configured to engage with and secure to at least one of a tail gate post and a tail gate latch of a vehicle.