Rearming kit
What is a rearming kit for an inflatable PFD?
The replacement CO2 cylinder and trigger an inflatable PFD needs after it fires or expires.
An inflatable vest holds a small CO2 cylinder and a trigger, either manual or automatic. Once it inflates, whether from a swim or an accidental soaking, the cylinder is spent and the vest is inert until you fit a new one.
Kits are inexpensive but they are a maintenance obligation. Cylinders corrode, automatic triggers have expiry dates, and an inflatable that has not been checked in three years is a vest you are wearing for reassurance rather than safety.
Foam vests need nothing equivalent, which is a real part of why they suit beginners and anyone who will not keep a maintenance schedule.
Kits are model-specific. Cylinder threads and trigger designs are not interchangeable between manufacturers, so buy the kit for your exact vest and keep a spare with it rather than in a drawer at home.
Automatic triggers fire on contact with water, which includes heavy rain and a wave over the bow. That is one more reason a lot of anglers prefer manual-only inflatables or plain foam.
Check the cylinder and trigger date at the start of every season. Write the date on the vest with a marker.
Where this comes up
The guides that use rearming kit and show it on real gear.
Last reviewed . Rearming kit is one of 222 terms in the fishing glossary.