Timmy Patterson Quad fins (set of 4) These fins are tested and are best suited for the all around quad shortboard. The back fins have 80/20 foil. A very well balanced quad set! front fins: HEIGHT: 4.35” / 111 mm BASE: 4.30” / 109 mm back fins: HEIGHT: 3.95” / 100 mm BASE: 3.85” / 98 mm If you're looking for a super light and fast quad fin setup then the Timmy Patterson Quad fins are for you. Quads first came onto the scene in the early 80's and eventually lost popularity amidst the thrusters and twin fins. Now with our lighter stronger boards the quad fins are making a comeback. Even Kelly Slater rips on his quad in contests all over the world. Riding a quad is like having an extra boost of speed when you need it most. With the Timmy Patterson quad set up your board will go as fast as you could ever want, and will still maintain the responsiveness you need to get vertical in tight situations. Don't just limit your quad riding experience to "small" surf. Having those four fins can hold you in to some good sized surf. In hollow conditions you will see how having the quad keeps you higher up in the face of the wave allowing you to make more barrels.