Adapter allows you to change from a traditional longboard fin to a FCS thruster set up in seconds, perfect for loosening up your longboard. The adapter is adjustable for deeper longboard boxes.
It works but could be better
by Zack on February 11, 2011
This adapter works and gives you the option to use the FCS system in the longboard fin box. I love the idea and it worked fine but even when I had all of the screws tight there was a bit of play in the fin, enough that it was noticeable when surfing. At the very least you need a shim for a tight fit and even then there will bit a little bit of play.