Volt Side Bites Fins Set - ST Box

Who is it for?

The Volt is designed for surfers who want a simple, efficient and well-balanced setup. It suits everyone from beginners to advanced riders. It is ideal for those looking for a versatile and easy-to-use 2+1 configuration. It works in all conditions with no surprises. It helps you progress quickly and surf without overthinking. It is the all-round reference.

What is it for?

In a 2+1 setup, it perfectly complements a central fin by adding rail hold without altering the single fin glide. It allows more confident turns, stronger pressure in maneuvers, and a clean trajectory in varied conditions.

It works equally well on modern longboards, mid-lengths, and all-round boards. In small to medium waves, it offers an excellent balance between speed and control. In faster waves, it remains stable enough to maintain solid hold.

It delivers a balanced and intuitive behaviour that is easy to read and use. It is the ideal choice for a versatile 2+1 setup that does everything well.

What size?

In a 2+1 setup, the center fin and side bites work together. Their relative size directly determines the balance between glide, stability and manoeuvrability.

The center fin remains the dominant element of the setup: it defines the line, stability and overall behaviour of the board. The side bites complement this by adding grip when the board is on rail, allowing deeper engagement in turns.

The balance between these two elements is essential.

This guide focuses on two side bite sizes: 3.5” and 4”, the most common sizes covering all longboard and mid-length uses.

3.5” side bites remain discreet. They preserve a single-fin-like behaviour, with lots of glide, long lines and a very fluid board. In contrast, 4” side bites add more grip and responsiveness. The board becomes more dynamic, easier to turn and more modern in behaviour.

The fundamental rule remains simple:

The larger the side bites, the smaller the center fin should be.

And conversely, the smaller the side bites, the larger the center fin can be.

However, in practice there is an important limit: once the center fin exceeds 6.5”, only 3.5” side bites are recommended.

Why?

Because a large center fin already generates significant control and stability. Adding oversized side bites would unbalance the setup, making the board too stiff, less fluid and less enjoyable to surf.

Thus:

• a center fin of 7”, 7.5”, 8” works ideally with 3.5” side bites
• 4” side bites are reserved for smaller center fins, generally 6.5” or less, to add dynamism without excess.

When the center fin is large and side bites are small, the board behaves closer to a single fin: smooth glide, stable line and wider turns. This setup is ideal for semi-retro longboards, soft waves and noseriding.

Conversely, when the center fin is smaller and paired with 4” side bites, the board becomes more responsive. Rail-to-rail transitions are faster, turns are tighter and surfing feels more modern. This setup suits modern longboards, mid-lengths and faster waves.

Finally, note that total fin surface should increase as board size increases. 

2+1 setup examples by board type

The set consists of two side fins (right and left).

It comes with a fin key for installation.