7S Superfish 4 Surfboard

The 7S Superfish 4 (SF4): The Best Superfish Yet

The 7S Superfish 4, known by its shorthand SF4, is 7S Surfboards' most refined take on the high-volume modern fish shape. It builds on the proven Superfish 3 platform and reintroduces classic design touches that 7S believes deliver the ideal balance between stability and turning response. The result is a board that appeals to a genuinely wide demographic, from surfers progressing out of the beginner stage to experienced riders who want to keep surfing well on days when a shorter, thinner board would leave them fighting the ocean.

Select your size using the variant selector on this page. The complete dimensions chart is below.

Outline: A Fuller, Faster Platform

The SF4 outline starts with a wider nose and a fuller shape through the front third of the board. Parallel rails carry that width from the nose well into the midsection, creating a large, stable platform that generates speed early and holds it through flat sections. Through the back half, 7S eliminated the flyer from earlier Superfish models, replacing it with a smoother, more continuous curve. The tail outline then tapers deliberately, giving your back foot a responsive pivot point for tighter-radius turns when you drive hard off the tail. The swallow tail adds additional bite and directional hold, particularly in cleaner, smoother conditions where that extra grip lets you commit to sharper lines.

Step Deck Design: Volume Where You Need It, Sensitivity Where You Want It

One of the defining features of the SF4 is the return of the original step deck. This classic shaping detail increases volume through the spine and out toward the rails while simultaneously creating a flatter deck surface overall. The effect is a lower, more sensitive rail profile than a conventional high-volume board would produce. You get the paddle power and wave-catching ease of a full-volume shape without the dead, unresponsive feeling through the rails that sometimes accompanies thicker designs. It is a refinement that makes the SF4 feel more like a performance shortboard than its volume numbers might suggest.

Bottom Contour: Single-to-Double Concave

The bottom runs a single-to-double concave from nose to tail. This combination is chosen for consistency and predictability: the single entry channels water flow and lift from the nose, while the double concave through the fins and tail releases that energy with speed and drive. The transition between the two is tuned to be smooth rather than abrupt, so rail-to-rail direction changes feel fluid and connected rather than twitchy. The concave does not restrict speed and does not fight you when you want to redirect quickly from a bottom turn into a top turn.

Rocker: Three-Stage Balance

The SF4 uses a three-stage rocker profile. There is enough flip in the entry section to prevent nose-diving when you drop into steeper, hollower waves, while the flatter midsection maintains forward drive and flow through the open face. Moderate curve through the tail means the board responds when you push hard, giving you a proper platform for turns with real power behind them. The rocker is not aggressive and not flat; it is the kind of all-rounder curve that keeps the board honest across a wide range of wave types.

Foil and Paddle Power

Volume is deliberately distributed under the chest and extended toward both the nose and the tail. This forward foil placement translates directly into paddle efficiency. The SF4 paddles into waves early, which is the single biggest performance advantage on smaller or weaker days. Getting into a wave earlier means more time on the face, more speed generated before your first turn, and far less frustration when the lineup is crowded and the window to catch a wave is short.

Quad Fin Configuration

The SF4 runs a quad fin setup. Four fins arranged in the quad cluster generate drive and hold through turns without a center fin to drag through the water, which translates into a lively, free feeling at speed. The two front fins channel water and produce lift and acceleration while the two rear fins supply bite and pivot. The combined effect suits the fish outline well: the board generates speed naturally from its plan shape, and the quad configuration lets you redirect that speed through turns without the stiff, locked-in feeling of a thruster. Check the variant selector on this page for fin box compatibility details.

Wave Range and Who It Suits

The SF4 is built for small to overhead surf and earns its reputation most clearly on days that other boards struggle with. Knee-high to waist-high days that feel slow on a regular shortboard come alive on the SF4 because the outline, foil, and paddle entry combine to find speed in weak, gutless surf. As the waves grow through head-high and toward overhead, the three-stage rocker and swallow tail keep the board controlled and driveable rather than washing out.

This is the board for surfers who have just started linking turns and want to push into the next level of performance. It is equally well suited to experienced surfers who want a fun, fast option for small surf days, or to anyone who finds that a standard shortboard leaves them paddling for waves they should be catching. 7S focuses on the hybrid and intermediate-to-experienced segment, and the SF4 is the clearest expression of that philosophy: a board that does not ask you to sacrifice performance in exchange for volume.

Questions about fit? Call Island Water Sports at 954-427-4929 or visit us in store.

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