Support can be easily installed on any early style KIRKEY seat, for newer style KIRKEY seats use 02100 Leg Restraint. Support increases side support to the leg under heavy cornering and especially in case of a side impact. Comes with mounting hardware. This side support is made out of the same grade of aluminum as the seat and can be ordered in any of the standard fabrics and colors listed with each seat. Cover sold separately. Substitute the last two numbers in the support part number with the appropriate fabric & color number.