FCS II Al Merrick Twin + Stabiliser Fin Set
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.
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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
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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.
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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.
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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.
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Order Processing:
Most orders are processed within 1–3 business days (Monday–Friday).
Processing time does not include weekends or holidays.
Where Orders Ship From:
We work with a mix of in-house fulfillment and trusted partner suppliers.
Depending on the item, your order may ship from:
Southern California (One Revolver Surfboards HQ)
A partner warehouse through Shopify Collective
This helps us offer faster shipping and a wider range of high-quality products.
Shipping Details:
Tracking numbers are emailed automatically once your order ships
Delivery times vary by carrier and product type (usually 2–7 business days)
Multi-item orders may arrive in separate packages
Apparel, accessories & small items ship via USPS, UPS, or partner carriers
Surfboard Shipping:
Surfboards ship via freight carrier with full insurance
Boards are packaged securely for safe transit
Typical delivery time: 5–12 business days, depending on region
International Shipping:
Delivery times and rates shown at checkout
Customs and import fees may apply based on your country
If you have any questions about your order or tracking, feel free to reach out anytime at info@onerevolversurfboards.com.