This design allows easy installation by simply drilling mounting holes in the steel floorboard base for the adjustable mount & full-length reinforcing plate. The entire assembly mounts to the floorboard. The reinforcing plate adds stiffness to the floorboard to keep flex to a minimum. The stock rubber floorboard pads remain unaffected. The arms are fully adjustable front to back. Accepts any H-D style male mount footpeg, sold separately.