VBOX Motorsport Store › HD2 Unit Roll Cage Mount HD2 Unit Roll Cage Mount $250.00 This harness bar mount for 1 5/8" (41.275 mm) roll cages is compatible with both HDMI and non-HDMI VBOX Video HD2 systems. This harness bar mount for 1 5/8" (41.275 mm) roll cages is compatible with both HDMI and non-HDMI VBOX Video HD2 systems. Purchase Added! You Might Also Like HD2 Unit Quick Release Mount Unterminated CAN cable Camera Mount Extension Replacement GPS Antenna Cigarette lighter Power Supply