FCS II Matt Biolos Mayhem Quad Rear Fin Set
The FCS II Matt Biolos Mayhem Quad Rear Fin Set is a pair of PC Carbon quad rears from the Mayhem range. Pair them with Mayhem tri set side fins for a fast, snappy quad that suits Lost-style performance boards.
Key Features
- Matt Biolos Mayhem template
- PC Carbon for a stiff, responsive feel
- Pairs with FCS II Mayhem Tri Fins side fins
- Performance Core Carbon: carbon reinforcement for a stiffer, more responsive feel
- Fits FCS II fin boxes and clicks in without tools
Specifications
| Fin system | FCS II |
| Setup | Quad rears (2 fins) |
| Construction | PC Carbon |
| Sizes | Medium, Large |
| Colors | Blue, Red |
Size Guide
As a general guide by surfer weight: Medium about 145–175 lb; Large about 165–200 lb. If you're between sizes, size up for more hold or down for a looser feel.
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.
Does this include front fins? No, this is a pair of rear fins. Use them with the side fins from a matching tri set or a quad front pair.
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.
