This guide explains the two most common removable surfboard fin systems—FCS and Futures—including how each system installs, which fins are compatible, and how template, size, and fiberglass construction influence performance. Understanding your fin system ensures correct fit, secure retention, and predictable board response across different wave conditions.

FCS vs Futures — Which Fin System Is Right for Your Board?

FCS and Futures are the two most common removable surfboard fin systems. Both provide secure fin attachment, interchangeable templates, and compatibility with modern fiberglass fin construction. The correct choice depends primarily on the fin boxes installed in your surfboard, as the two systems are not interchangeable.

Installation Method

FCS
Traditional FCS dual-tab fins fit into two separate plugs and are secured with small screws. FCS II versions allow tool-free click-in installation, with an optional screw for additional hold.

Futures
Futures fins use a single solid base that slides into a continuous fin box and tightens with one forward screw. This creates a strong, stable connection with minimal movement under load.

Performance Feel

FCS
The dual-tab connection can produce a slightly more responsive, lively feel, particularly with lightweight boards or upright fin templates.

Futures
The full-base engagement distributes pressure along the entire box, often delivering a more solid, drive-oriented feel through turns and higher-speed sections.

Durability and Maintenance

Both systems are reliable when correctly installed.

  • FCS systems rely on plug integrity and correct screw tension.

  • Futures systems depend on the condition of the fin box and forward screw seating.

Regular inspection of screws, tabs, and boxes helps maintain secure retention and long service life in either system.

Choosing the Correct System

Select fins based on the hardware already installed in your surfboard:

  • Boards with FCS or FCS II plugs require FCS-compatible fins.

  • Boards with Futures fin boxes require Futures-compatible fins.

Once compatibility is confirmed, performance differences are influenced more by template, size, and fiberglass construction than by the attachment system itself.

Understanding the distinction between FCS and Futures ensures proper fit, safe installation, and predictable surfboard performance across varying wave conditions.

FCS Surfboard Fin System Guide

FCS is one of the most widely used removable surfboard fin systems. The design uses two plugs installed in the surfboard, allowing compatible fins to be inserted and secured with either a grub screw or a tool-free click-in mechanism depending on the generation.

There are two main FCS formats:

FCS (dual tab)
Traditional two-tab base that fits standard FCS plugs and is tightened using a small screw. This system remains common on many surfboards and allows precise fin positioning and secure hold.

FCS II (tool-free system)
A newer click-in design that allows fins to be installed or removed without screws or tools. FCS II fins can still be secured with a screw when additional hold is preferred, making the system versatile across different wave conditions.

Choosing FCS-Compatible Fins

When selecting fins, the key factors are:

  • Compatibility – Confirm whether your board uses FCS or FCS II plugs.

  • Template – Upright templates offer tighter turning, while raked templates provide drive and hold.

  • Material – Fiberglass constructions such as Pro Glass or Volan provide consistent flex and durability compared with moulded plastic fins.

Eveley FCS-compatible fins are built using traditional fiberglass layups to deliver predictable flex, long service life, and reliable performance across a wide range of surf conditions.

Understanding your fin system ensures correct fit, safe installation, and optimal board performance.

Futures Surfboard Fin System Guide

Futures is a single-box removable surfboard fin system widely used on modern shortboards, mid-lengths, and performance longboards. Each fin uses a solid base that slides into a pre-installed fin box and is secured with a single screw at the front of the box, creating a strong and stable connection between fin and board.

Key Characteristics of the Futures System

Single-tab base design
Unlike dual-tab systems, Futures fins use a one-piece base that distributes load along the full length of the fin box. This construction increases strength, reduces movement under pressure, and provides consistent energy transfer through turns.

Forward screw retention
Futures fins are installed by sliding the fin into the box and tightening a single screw at the front. This method keeps the trailing edge clean and minimises turbulence while maintaining secure hold in demanding surf.

Material performance
Fiberglass constructions such as Pro Glass and Volan deliver predictable flex, durability, and long-term reliability compared with moulded plastic alternatives. These materials are commonly preferred for performance surfing and traditional board designs.

Choosing Futures-Compatible Fins

When selecting fins for a Futures system, consider:

  • Template – Upright templates favour quick direction changes, while raked templates emphasise drive and hold.

  • Size – Fin height and base length should match rider weight, board dimensions, and wave power.

  • Construction – Fiberglass layups provide consistent response and extended service life.

Eveley Futures-compatible fins are manufactured using traditional fiberglass techniques to ensure accurate fit, dependable strength, and balanced flex across a wide range of surf conditions.

Correct identification of your fin system helps ensure proper installation, secure retention, and optimal board performance.