The MAX G2 KIT is an Ex LED replacement kit for MAX. It brings a longer product lifetime, a greener profile and a lower maintenance. To upgrade the MAX T8 version to LED with new certificate, you have to replace the gear tray, the diffuser, the clips and if it is an emergency version the battery with connection. All necessary parts are included in the replacement kit; the gear tray, the diffuser, the clips and if it is an emergency version the battery with connection- where it is mentioned.