Hate to see these go but most of my boards are now Futures so I’m emptying out excess FCS fins. Performance Core construction — a versatile set that lets you run thruster for drive and tail release, or quad for extra speed and smoother rail-to-rail transitions through open faces and barrels. My go-to fins when the waves get big and hollow in the winter - Large thrusters allow you to kick heavy on the bottom turn; the Quad setup is killer since the Medium rear fins allow for a little looseness and prevent the board from feeling too stiff on late takeoffs