This is the most popular quad set from Maui Ultra Fins combining X-Twins for the main fins and X-Quads for the side fins. To pick your configuration, use the chart below. First find your board size (color coded). You will then find 2-3 combinations of fins that are recommended. For an 85 liter board: 14.5 & 10cm for best sideshore wave performance 15.5 & 9cm for best all around performance 16.5 & 8cm for more onshore/backside/bump & jump performance choose the onshore option if you also plan on sailing sometimes as a twin please specify fin box type in the comments of your order (US, Slot Box, Mini Tuttle) Some configurations will be special ordered and take 1-2 weeks for delivery Please note, other configurations can be ordered/substituted X-Twin-S and X-Quad-S swept fins for weedy conditions Twin instead of X-Twin in the main fins for more power/grip
