FCS Longboard Box Adapter fiberglass protector is an ultra-light

is an ultra-light

which should not be used in with any older pumps with a white head (301 and 303 pumps)

FCS II jig plate is used as guide to give you a perfect fit when you route out the hole before installing FCS II boxes

also provides excellent results on gel coat and some paint finishes

FCS Longboard Box Adapter fiberglass protector is an ultra-lightThis FCS Box Adapter allows you to change from a traditional longboard fin to a FCS Thruster setup in seconds,perfect for loosening up your longboard. The FCS Adapter fits most standard longboard box. The adapter is adjustable for deeper longboard boxes Change your traditional longboard fin to FCS thruster set up in seconds.