All / Fins / Thruster fins All Sale Boards Fins Centre fins Side fins Twin and Keel fins Thruster fins Quad fins Accessories Futures compatible grub screws. from $2.50 Select Number of grub screws. 2 4 6 8 10 12 Add To Cart 3.5" Classic Stabilizer /third fin, natural Pro Glass. Futures compatible. $32.00 Only 1 left in stock Add To Cart 3.1" Keelish Stabilizer / third fin, natural Pro Glass. Futures compatible. $32.00 Add To Cart 4.5" Progressive Thruster Fins, brown on caramel on bone Pro Glass. Futures compatible. $99.00 Only 1 left in stock Add To Cart 5.4" Big Boy Thruster Fins, solid black Pro Glass. FCS, FCSII and Futures compatible available. $99.00 Select Tab compatibility FCS FCSII Futures Add To Cart FCS compatible grub screws. from $2.50 Select Number of grub screws. 2 4 6 8 10 12 Add To Cart 3.5" Classic Stabilizer /third fin, natural Pro Glass. FCS compatible. $32.00 Add To Cart Compatibility kit makes the original FCS fins fit the FCSII box. $17.00 Add To Cart 4.6" Classic Thruster Fins, red Pro Glass. FCSII compatible. $99.00 Only 1 left in stock Add To Cart 4.6" Classic Thruster Fins, smoke Pro Glass. FCSII compatible. $99.00 Only 1 left in stock Add To Cart 4.6" Classic Thruster Fins, green Pro Glass. FCSII compatible. $99.00 Add To Cart 4.6" JF Thruster Fins, ruby Pro Glass. FCSII compatible. $99.00 Add To Cart 4.6" Ultra Lite Thruster Fins, black Xtreme Pro Carbon. FCSII compatible. $132.00 Add To Cart 4.73" / 4.49” AM2 Thruster Fins, old red Pro Glass. FCSII compatible. $99.00 Add To Cart 2.9" Stabilizer / third fin, solid black Pro Glass with a machined finish. FCSII compatible. $32.00 Sold Out Add To Cart 3.1" Keelish Stabilizer / third fin, solid black Pro Glass. FCSII compatible. $32.00 Add To Cart 3.4" Classic Stabilizer /third fin, natural Pro Glass. FCSII compatible. $32.00 Only 1 left in stock Add To Cart 4.6" JF Stabilizer / third fin, ruby colour Pro Glass. FCSII compatible. $32.00 Add To Cart