The Apeks FSR/FST 5th Port Upgrade Kit is only suitable for the post 2012 model FSR (XTX200), and the now discontinued FST type first stages (XTX200 and XTX100 first stages). There is a separate version for the DST-type (XTX50) first stages.
The 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.
The end-port allows any length dry suit/wing LP hose attachment and direct routing to the kit making your 1st stage regulator ideal for sidemount diving.
Please be aware that this 5-port upgrade kit (AP02741) 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.
- 5th port allows for a hose routing options that can be advantageous when mounting the first stage to twin cylinders
- Heat exchanger helps resist freezing in cold water.
- High polished chrome plating over marine brass
This kit cannot be retrofitted to any of the old XTX first stages, it can only be fit to new XTX200 and XTX100 first stages which use the metal decal. This is specified in the kit instructions.