FCS II Modern Keel Twin Fins

Upright keel template designed for traditional fish shapes.

Rated 4.9 out of 5
Based on 9 reviews
Product In Stock
  • 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.

    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.

  • Medium - Large

    New Sizing for Specialty Fins

    You may notice new size ratings for our Specialty Fin Range. Previously, all Specialty Series fins were rated an XL. To better reflect fin sizing, we now have 3 new size categories:  S-M, M-L, and L-XL.

    Please refer to the Size/Fin Data tab on the product page to compare dimensions, or alternatively, you can find more information on the  FCS Fin Data Page

     Fin

    Base (inches)

    Base (mm)

    Depth (inches)

    Depth (mm)

    Area (inches)

    Area  (mm)

    Sweep Deg°

    Foil

    M/L  6.41 162.8 5.50 139.5 25.05 16160 32.8° Flat

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



  • We offer:

    • Express Shipping: Select Express 2nd Day Shipping at the Checkout for an additional fee of $15.
    • 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 4.9 out of 5
    Based on 9 reviews
    • 5 Stars
      8 Reviews
    • 4 Stars
      1 Review
    • 3 Stars
      0 Reviews
    • 2 Stars
      0 Reviews
    • 1 Star
      0 Reviews
    100% of reviewers would recommend this product to a friend
    Customer photos and videos
    9 Reviews
    Reviewed by Joel B., from Australia
    Verified Buyer
    I recommend this product
    Surfing Ability
    Experienced
    Board Type
    • Other
    Rated 5 out of 5
    Review posted

    Great performance keep fins.

    Love these fins. Plenty of drive and hold but tall enough to allow you to do tighter arcs too.

    The air core are a great material that seem to take a bit of weight out of the board and add a bit of buoyancy which helps in really small surf.

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    Reviewed by Sean T., from United States
    Verified Buyer
    I recommend this product
    Surfing Ability
    Intermediate +
    Board Type
    • Performance
    Rated 5 out of 5
    Review posted

    Love ‘em

    You can’t beat the Modern Keel for a high performance twin. These things cut through water like a hot knife through butter but still hold tight when it’s time to go vertical!

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    Reviewed by Stephen D., from Australia
    Verified Buyer
    I recommend this product
    Surfing Ability
    Intermediate
    Board Type
    • Funboard
    Rated 5 out of 5
    Review posted

    Drive-Keel

    These Keel fins are great, awesome Drive and hold!

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    Reviewed by Ryan C., from Australia
    Verified Buyer
    I recommend this product
    Surfing Ability
    Advanced
    Board Type
    • Funboard
    Rated 5 out of 5
    Review posted

    Good delivery.

    Still waiting on the board i ordered 😊

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    Reviewed by Larry K., from United States
    Verified Buyer
    I recommend this product
    Surfing Ability
    Advanced
    Board Type
    • Performance
    • Funboard
    Rated 5 out of 5
    Review posted

    seaside & FCS ll modern Keel Twins

    these fins worked amazing in waste to shoulder high OB beach break in San Francisco ... great stability & speed. was really impressed with how the held in the turns ... Do you self a favor get a set .. Tons of Fun ..

    Kelsey

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