This kit is only suitable for the current XTX200 and XTX100 first stages (FSR and FST type). 5th port offers the user more versatility in terms of hose routings and port positions depending on the type of diving. This particular version incorporates a heat exchanger which acts as an additional safeguard against freezing.
Please be aware that this 5-port kit cannot be used on the old style XTX 1st stages. It has to be one of the current XTX200 or XTX100 with the new metallic decal.