FCS II Modern Keel Twin Fins

Rated 4.7 out of 5
3 Reviews

Upright keel template designed for traditional fish shapes.

  • Overview

    • Upright keel template designed for traditional fish shapes.
    • Lower sweep (rake) than most conventional, wider based keels which allows it to pivot in a really tight radius.
    • High area and depth not only delivers a feeling of control when pushed harder on the open face, but helps to maintain tremendous speed through roundhouse cutbacks.
    • Black & Clear in Performance Glass, White in new PC AirCore material.

    Board Types

    • Designed to fit the FCS II Fin System.
    • Recommended for all board types including fish, funboard and twin fin boards.
  • Performance Glass

    Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff, and are widely used by pro level surfers because the integrity of the flex is maintained under immense force, and in the most extreme of conditions and situations.

  • X-SMALL (Under 55Kg / 120 Lbs)
    SMALL (55Kg - 70Kg / 120 - 155 Lbs)
    MEDIUM (65Kg - 80Kg / 145 - 175 Lbs)
    LARGE (75Kg - 90Kg / 165 - 200 Lbs)
    X-LARGE (Over 85Kg / 190 Lbs)

    View the FCS Fin Data page for Base/Depth/Area/Foil information.

  • We offer:

    • Free Express Shipping: on this item.
    • Tracking: Quick & easy online tracking. 
    • Peace of Mind: All our deliveries are fully insured against damage.
    • Returns: 30 day exchange or refund for unopened items.


    average rating 4.7 out of 5
    Based on 3 reviews
    • 5 Stars
      2 Reviews
    • 4 Stars
      1 Review
    • 3 Stars
      0 Reviews
    • 2 Stars
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    • 1 Star
      0 Reviews
    100% of reviewers would recommend this product to a friend
    3 Reviews
    Rated 5 out of 5
    Review posted


    Good drive, great twin fins

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    Rated 5 out of 5
    Review posted

    Ordering was seamless. Product showed up when you said it would.

    I put this type of fin on a Mark Richards 5’8” Bumble Bee Twinny. Increased projection, holds well on hard turns and provided discernible velocity contribution.

    Much better than the Mark Richards fins that I previously ordered for the same design.

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    Rated 4 out of 5
    Review posted

    Modern Keel

    I use these fins on a 5'8" fish shaped from a small, local board shop. Not too much drag from these fins and they pump and turn pretty well. I've not had a problem with the tail sliding but that's probably because I can't push my fish too hard anyway. All around cool fins.

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    Hi, it looks like you are in . Would you like to go to your local store?