A modular armored cab kit is provided for use on an armored vehicle that includes a cab body having a frame, an armored roof, an armored floor and a plurality of attachment elements, with the roof, floor and attachment elements being permanently attached to the frame. The cab kit further includes at least one non-armored panel, at least one non-armored door, at least one armored panel and at least one armored door, each for attachment to the cab body. The attachment elements facilitate field installation and removal of the panels and doors, wherein the non-armored panel and door are removably attached to the frame in a relatively low threat environment and are removed from the frame and replaced with the armored panel and door in a heightened threat environment.