OwnTheSurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. As an affiliate, this website earns from qualifying purchases.

Surfing is an extremely popular sport that requires little equipment. The equipment that surfers do need, however, is very important and is customized to the type of surfing they like to do and the conditions in which they generally surf.

One very important element of the surfboard is the fins because the shape, configuration, material, etc., all help determine how the board will ride.

Nowadays, you can get removable fins for your board, which is ideal for surfers who want to try out different types of fins.

FCS is one of the leading brands that brought the idea of removable fins into being. In this article, we will focus on one of their fin types in particular, the Reactor.

If you’re looking for an FCS 2 Reactor Fins review, this article will help you take a closer look at this product to better determine whether or not it might be a suitable option for you.

Surfboard Fin Features

If you are just getting into surfing, there are a few things you should understand about the different types of surfboard fins to help you decide which would be best for you. 

Fin Systems

There are two different types of fins: glass-on fins and removable fins. 

Glass-on fins are laminated into the surfboard, so they are a fixed part of the board.

The advantage to this type of fin system is that it offers a smoother and more predictable ride.

The disadvantage is that since they are not removable, they can be difficult to replace if they get broken.

Another type of fin system is removable fins. 

Boards that accommodate this type of system have fin boxes on the bottom of the surfboard where fins can be attached or removed using a fin key to adjust a small set of screws on the box. 

A removable fin system is easier to travel with and is also more versatile because a surfer can try different types of fins without having to purchase multiple boards. 

Fin Setups

There are also a variety of different fin setups. The number of fins on a surfboard can range from 1 to 5, and this is determined by the type and shape of the board.

A board with a single fin is good for speed and stability. Maneuverability is limited, though, so this setup is better for point-and-shoot surfing.

A single fin is most common on longboards and can sometimes be found on retro shortboards or mid lengths. 

A twin fin setup is also known as keel fins. Boards with keel fins are more maneuverable than a single fin, especially in small waves.

This setup is most common on small wave boards.

A thruster configuration is also known as a tri fin setup, and it is the most common setup on today’s boards.

The thruster setup is versatile in all types of waves, and it allows for vertical surfing and progressive maneuvers. 

The quad setup gives a board more speed than one with a thruster setup. This configuration also loosens up the tail of the board because it does not have a center fin to provide control and pivot.

As a result, a quad setup can feel looser, which makes it more fun on smaller waves.

A 5-fin setup is the most versatile because it allows the surfer to switch between thruster, quad, or twin depending on the surf conditions or what types of surfing they want to do.

Boards with this setup are becoming much more popular. 

While there are a couple other alternative configurations, these are the most common setups for surfboards.  

About the company

FCS was established to help fulfill the idea of creating removeable surfboard fins. This company has been designing and creating for over 25 years and they have always been at the forefront of surfing innovation.

One of the first revolutionary fins that FCS put out were the H-2 fins.

These fins were designed with a different geometry than any other fins on the market, and they were made with aluminum and fiberglass composite for a lightweight feel. 

The FCS H-2 fins won the Australian Design Award of the Year in 2005. 

A few years later in 2008, The H3 Nexus fins helped determine FCS’s status as the industry leader in fin development.

This next level of the H-series introduced TRICOIL technology with a multi-directional flex pattern that helped increase acceleration and control. 

In 2012, FCS introduced the well-known FCS II System that made it possible to install and remove the fins in a matter of seconds without any screws or tools. This addition revolutionized the field.

Since then, FCS has continued with their innovation, continuing to work with new materials and templates to improve their already loved and trusted products. 

FCS has proven time and time again that they are not only a company to trust, but one to watch as they continue to bring better designs and products to the sport.

They have become leaders in the surf hardware space and remain committed to improving the surfing experience from start to finish. 

FCA 2 Reactor Fins Review: A good option for you?

The Reactor fin family is designed for speed, tight turns and snaps. The fins perform the best in hollow waves and are great for beach breaks. 

The Reactor fins fit the popular FCS II Fin System.

They are recommended for use with performance shortboards with moderate to low rocker. 

The upright positioning of the fins provides more accurate direction changes.

The smaller center fin allows for increased pivot and tail release. 

Experienced surfers will get the most out of these fins. They are ideal for those who like to perform fast, progressive turns. 

The Reactor fins come in several options, including the PC Carbon Tri Fins, PC Quad Rear Fins, and replacement fins. 

All of these options have the same general features mentioned above, simply varying in the number of fins in the set. There are also several different materials to choose from. 


The Reactor Tri Fins are made from Performance Core material. They are made using a multi-layered resin transfer molding process.

The flex pattern on these fins extends from the base all the way through the tip; this helps the surfer maintain their hold through a sharp turn.

This material is ideal because it is lightweight and can be used in different conditions. 

The Reactor fins also come in another material option: PC Carbon +Aircore; fins made from this material typically called PC Carbon or PCC. 

The PC Carbon Essential Series uses a blend of carbon tissue and extremely lightweight AirCore construction. The carbon is strategically placed to compliment the shape and template of the fin. 

The AirCore technology is a pressed polyurethane foam that mimics the geometric foil of the fin; this technology allows for a lighter fin with total control and manipulation of the flex. 

This blend provides a more user-friendly flex pattern because of the epoxy resin and the added carbon twill to the base.

This allows the surfer to achieve a faster start up acceleration and smoother turns.

The stiffness of the lower half of the fin increases the drive and acceleration, and the softer flex in the top half of the fin allows for the smoother, more predictable turns. 

PCC fins are great for fast surfing; they are also preferred by power surfers who perform explosive turns on more difficult parts of the wave. 

You can buy Reactor replacement fins in Performance Core, PC Carbon, and PC Carbon +AirCore, also already mentioned.

In addition to these materials, you can also buy replacement fins in glass flex or neo glass.


The Reactor fins come in numerous sizes, ranging from extra small to extra large.

The extra small can support 120 pounds or less (under 55 kg), the small can hold 120-155 pounds (55-70 kg), the medium can support 145-175 pounds (65-80 kg), the large can support 165-200 pounds (75-90 kg), and the extra large accommodates 190 pounds and above (over 85 kg). 

Who should use them?

Surfers who enjoy a lot of speed will benefit from these fins, and the various available materials will also aid with additional speed and acceleration. 

Additionally, surfers who want to be able to complete tighter turns with more precise directional change will also benefit from these fins because the smaller center fin helps increase the amount of pivot. 

Because of the variety of material options, these fins are versatile and can be useful for strengthening a surfer’s skills. 

Overall, these fins are a durable and useful addition from a trusted brand. They will help enhance the feel of the surfboard and the surfer’s performance. 

The Reactor fins will be most useful for a surfer that has a lot of experience and who is looking for an equipment boost to help them sharpen their turns and pick up a little extra speed. 

Featured image credit: Shutterstock.com Image ID: 193659908