The F4 is the next generation in performance longboarding. This board is light, thin and fast, with a Quad fin option for those looking to loosen things up and take speed to the next level.

The F4 is super fast, and drives hard off the bottom with its pintail template and hard edges in the tail. The 17" nose will even let you sneak in a quick noseride.

This is one for the performance guy looking for great off-the-tail performance, and down-the-line speed. It's an essential to any serious longboarders quiver.

"Last weekend on my second ride, the true value of Quad fins, thinner pin tail and lightweight became apparent. This thing is fast..."

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• SLX
  • SLX EPOXY TECHNOLOGY
    SLX construction produces a controlled flex pattern by combining the versatility of epoxy materials with the added advantage of reduced weight. All SLX boards have an EPS core with a high-grade timber stringer, which is laminated by hand using epoxy resign, biaxial fiberglass and a specialized construction process.
    Featuring a high strength-to-weigh ratio, and designs CNC milled directly from the shapers files. SLX boards feel light, responsive and are very sensitive under your feet. These boards are extremely versatile, easy to ride, and can be used in wide variety of conditions.

    You can find out more about GSI's surfboard construction on our surfboard technologies page

Flat Concave

Neutral Rail

2-7ft waves

Intermediate - Advanced