$135.00

Shipping calculated at checkout.

Color

Natural/Alpine

Black

Clear

Quantity

The FCS II Modern Keel Twin Fins take the classic fish keel and update it for today's fish and twin shapes. You still get the speed and drive keels are loved for, with a looser, easier-turning feel than a traditional full keel.

Key Features

Updated keel template for modern fish
Keel drive and speed with a looser feel
Great for twin fish and retro-inspired boards
Performance Glass (PG): machine-cut from layers of solid fiberglass for a stiff, consistent flex
Fits FCS II fin boxes and clicks in without tools

Specifications

Fin system	FCS II
Setup	Twin keel (2 fins)
Construction	Performance Glass
Colors	Natural/Alpine, Black, Clear

FAQ

Will these fit my board? They fit boards with FCS II fin boxes. They won't fit original FCS two-tab plugs or Futures boxes.

What boards are keels best for? Twin keels are best on fish and wide-tailed twin shapes, where their long base gives you drive and speed down the line.

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.

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Join the One Revolver Crew

FCS II Modern Keel Twin Fins

Key Features

Specifications

FAQ