

FCS II Al Merrick Twin + Stabiliser Fin Set (M-L / Performance Core / Grey/Charcoal)
The AM Twin + 1 is the original twin template from the CI brand. This twin set is designed for speed and quick and easy turning. Performance Material Size Over…
Adds to your Lundquist cart. Mix with boards and accessories — single Stripe checkout. Ships in 3–5 business days after a Lundquist QC pass.
Specs
- Fin box
- —
- Foil
- —
- Rake
- —
- Base
- —
- Depth
- —
- Area
- —
- Weight
- —
- Material
- composite
- Construction
- Performance Core
About this fin
The AM Twin + 1 is the original twin template from the CI brand. This twin set is designed for speed and quick and easy turning. Performance Material Size Overview This twin template has a robust base which produces exceptional drive, and a very tapered, narrow tip that releases fast and easily when turning off the top. The low sweep of this twin template means it stands very upright, helping the board to pivot in a very tight radius while minimising drag. The side fins also sit quite deep in the water which adds an underlying feeling of stability when driving through more powerful turns. The trailer fin is offset from the standard shapers dot position, and has been moved forward on the fin tabs. This essentially tightens the overall fin cluster making it more usable on twin + 1 models and hybrid boards such as the G-Skate and the Rocket Wide. Low sweep, upright twin template Drivey + pivot. Tight radius turns Trailer fin offset forward on tabs Compatible with twin and hybrid models Board Types Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard and twin fin boards. Performance Core Performance Core (PC) fins are made using a multi-layered resin transfer moulding process. The flex pattern in PC fins extends progressively from the base through to the tip, helping the surfer to maintain drive and hold through a turn. This versatile fin material is light and can be used in a variety of different conditions. 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 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 Side 5.07 128.6 5.61 142.3 20.37 13140 32.1° Flat Centre 3.22 81.6 3.73 94.7 8.89 5738 35° 50/50 View the FCS Fin Data page for Base/Depth/Area/Foil information.
New to twin fin setups?
Learn how foil, rake, and family choice shape the way a board rides.
More twin fin options

Wayne Rich Nightmare Keels - Futures Compatible (Solid Fiberglass) (red)
futures
The Wayne Rich Nightmare keels have been carefully crafted with close attention to detail in order to harness the full potential of the fins' design. The swept…

Ryan Burch Rakey Twin - Futures Compatible (Volan) (white (Volan))
futures
The Rakey Twin designed by Ryan Burch incorporates an elongated raked template with white tinted Volan fiberglass for pronounced flex. This unique template and…

Libra Twin - Futures Compatible (Solid Fiberglass) (ivory)
futures
Designed by Jordan Brazie of Valaric surfboards, this twin slots nicely into the hybrid realm... more full than an upright twin, but not as much drawn out rake…
Pair this fin with a Lundquist board
Every Lundquist board is built to your spec. Tell Blake what you’re after and he’ll dial in the fin recommendation with the shape.
Start a Custom Order