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FCS

FCS Longboard Box Adapter

    • Based on 42 reviews
Condition: New
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$19.95 Why this price?
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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Nov 24
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Features

  • Backstrap closure
  • Designed in collaboration with the world's leading surf athletes and surfboard shapers, the FCS range offers a diverse range of surfboard accesories suited to a variety of board models, wave conditions and surfing styles. FCS fins are the preferred choice by the worlds best surfers and shapers.

Description

Allows you to change from a traditional longboard fin to a FCS thruster set up in secondsPerfect for loosening up your longboardThe adapter is adjustable for deeper longboard boxes


Size: One Size


Sport: Surfing


Brand: FCS


Closure Type: Backstrap


Strap Type: Adjustable


Is Discontinued By Manufacturer ‏ : ‎ No


Item model number ‏ : ‎ model


Department ‏ : ‎ Unisex


Date First Available ‏ : ‎ September 30, 2009


Manufacturer ‏ : ‎ FCS


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Not very simple
It’s very difficult to get a fin into the adapter and to remove a fin. The to install the adapter into fin box was even more difficult. And on many fin boxes, you can’t put the fin back far enough for small fins. You’re better off getting a thruster center fin made for a longboard box if you can.
Reviewed in the United States on June 21, 2023 by Andrew
    • delivered on time and wells pretty well
purchased for a surf sup... installed without problem and allow versatility of dropping in my surfboard fcs fins in my surf sup.... great idea, great product, good price. only complaint.... and total disclosure... i own a surf shop and ordered this for myself when we were out of stock.... we have had a problem with these being too deep.... much like some longboard fins we get in... the adapter where it screws tight into the board is sometime thicker than the longboard/sup box.... meaning you can tighten down and still not have pulled tight in box but have tab pulled tight to bottom of adapter.... this leaves adapter or fin felling loose and able to slide... if this happens you need to sand the adapter down to where it's thickness is less than the track in box's thickness... no big deal but it is a problem we have seen and if you know how to fix... then it's not a serious issue only an inconvenience that can be fixed in minutes. ... show more
Reviewed in the United States on April 12, 2013 by Grady L. Simmons
    • Fits and works but fin is not flushed.
Used this on my Takayama Scorpion and fits great. I love this adapter because it turns my board into a thruster. The only con I have is that when I place my FCS fin and I tighten the grub screws it lifts the fin out of the adapter a bit leaving a gap between the fin and the adapter. I have to adjust the grub screws to where it secures my fin but deal with the fin not being flushed with the adapter. When it's flushed with the adapter the fin is loose because the grub screws are not tight enough. Besides that I would recommend. ... show more
Reviewed in the United States on July 20, 2015 by Abel
    • Works okay but think FCS II performer a better choice...
Seems to work okay with my epoxy Southpoint longboard... fits snug enough not to move for and aft but rocks a bit side to side. My medium size thruster center fin fits in adapter without any modification. I got this because I had a couple boards with an FCS thruster set-up. Ended up ordering the FCS II Performer series fin that fits in the longboard center box and is adjustable without using tools, think I like it better... ... show more
Reviewed in the United States on October 4, 2016 by PJ
    • Doesn't fit FCS HI-1 center fin without filing or redrilling
Review Image by R R
Fitment like others have said is very tight. Had the adapter been 1/2-1" longer for the front screw and plate it would've been perfect. I guess these don't fit XL sized center thruster fins probably meant for everything size L and below. Fits great in the center fin box of my Naish Mana tho. Just a little bit of filing of the base of my FCS HI-1 fin and a redrilled hole an 1/8" forward should be able to give access for the front screw to screw the adapter down. Was hoping it was gonna be a plug and play deal. Modifications obviously necessary in this case. ... show more
Reviewed in the United States on November 25, 2015 by R R
    • a useful item
The beauty of having an adapter like this is it allows you more flexibility in fin choices. I tend to go against the grain and believe that smaller fins make for a better riding experience, so not only can you use this adapter to convert a longboard with a single & side-bite configuration to a thruster, which is kind of what it's intended for, but also to take a single fin board and use a small fcs fin to loosen up the tail. If you know how to turn a surfboard you really don't need a lot of drag to accomplish it, and having the freedom to pop it loose and slide a little makes for some fun motion. ... show more
Reviewed in the United States on June 29, 2011 by jqryder
    • Overall this is a very nice solution to convert to FCS thruster fin setups on ...
The FCS Box adapter works perfectly with original patented Fins Unlimited US made longboard box. I've read other reviews with problems, likely because their fin boxes are actually Chinese knock offs. The FCS box adapter small "Grub Screws" are designed / positioned to hold the fin securely when the longboard box attachment screw is in front of the fin. It's also critical to tighten the Grub screws evenly and very firmly to ensure the fin stays secure in the adapter. Overall this is a very nice solution to convert to FCS thruster fin setups on Stand Up Paddleboards and Longboard surfboards. ... show more
Reviewed in the United States on August 26, 2016 by Solbreeze
    • Works Great
This works great BUT they need to make one for the FCS2 fins.
Reviewed in the United States on May 20, 2021 by Amazon Customer

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