








FCS II Britt Merrick Twin Fin Set
This high-area twin fin provides the drive and hold you expect from a keel, with the pivot and release found in the upright AM twin template.Ā
Free shipping on this item
- Performance
- Material
- Size
-
Overview
"A twin fin that you can push harder, turn tighter, and surf more vertically" - Britt Merrick
Bridging the gap between the CI Keel and AM Twin - this high area twin fin provides the drive and hold you expect from a keel, with the pivot and release found in the upright AM twin template.
Placing itself in the middle of the CI family, the BM template has a swept-back long leading edge that leads into a fully rounded tip. Different from other twin templates, this fin is designed to feel secure when laying into a longer turn or driving hard off the bottom.
With the CI Twin Pin/CI Mid in mind, the idea was to help anchor the tail to the wave face so surfers could take a more aggressive approach to ride a twin fin.
- Highest area twin set in the FCS range.
- The low sweep (rake) and narrow tip means these fins pivot and release exceptionally well while maintaining incredible trim speed and the ability to quickly break into a turn.
Board Types
- Designed to fit the FCS II Fin System.
- Recommended for all board types including fish, funboard and twin fin boards.
-
PerformanceĀ Glass
Performance Glass (PG) fins are machine cut from 30 layers of solid fibreglass. 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.

-
Large - Extra Large (One size suits all)
New Sizing for Specialty Fins
S-M: (Under 75Kg / Under 143 Lbs)
M-L: (70Kg - 90Kg / 132 - 187 Lbs)
L-XL: (Above 85Kg / Above - 176 Lbs)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
Ā Fin Base (inches)
Base (mm)
Depth (inches)
Depth (mm)
Area (inches)
AreaĀ (mm)
Sweep Deg°
Foil
L/XL 5.66 143.7 5.41 137.4 23.24 14991 35.2° Flat
View theĀ FCS Fin Data pageĀ for Base/Depth/Area/FoilĀ information.
-
Ā
Original: $143.43
-65%$143.43
$50.20Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
This high-area twin fin provides the drive and hold you expect from a keel, with the pivot and release found in the upright AM twin template.Ā
Free shipping on this item
- Performance
- Material
- Size
-
Overview
"A twin fin that you can push harder, turn tighter, and surf more vertically" - Britt Merrick
Bridging the gap between the CI Keel and AM Twin - this high area twin fin provides the drive and hold you expect from a keel, with the pivot and release found in the upright AM twin template.
Placing itself in the middle of the CI family, the BM template has a swept-back long leading edge that leads into a fully rounded tip. Different from other twin templates, this fin is designed to feel secure when laying into a longer turn or driving hard off the bottom.
With the CI Twin Pin/CI Mid in mind, the idea was to help anchor the tail to the wave face so surfers could take a more aggressive approach to ride a twin fin.
- Highest area twin set in the FCS range.
- The low sweep (rake) and narrow tip means these fins pivot and release exceptionally well while maintaining incredible trim speed and the ability to quickly break into a turn.
Board Types
- Designed to fit the FCS II Fin System.
- Recommended for all board types including fish, funboard and twin fin boards.
-
PerformanceĀ Glass
Performance Glass (PG) fins are machine cut from 30 layers of solid fibreglass. 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.

-
Large - Extra Large (One size suits all)
New Sizing for Specialty Fins
S-M: (Under 75Kg / Under 143 Lbs)
M-L: (70Kg - 90Kg / 132 - 187 Lbs)
L-XL: (Above 85Kg / Above - 176 Lbs)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
Ā Fin Base (inches)
Base (mm)
Depth (inches)
Depth (mm)
Area (inches)
AreaĀ (mm)
Sweep Deg°
Foil
L/XL 5.66 143.7 5.41 137.4 23.24 14991 35.2° Flat
View theĀ FCS Fin Data pageĀ for Base/Depth/Area/FoilĀ information.
-
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