FCS II Matt Biolos Split Keel Quad Fins
Best high performance quad set for versatile fish surfboard shapes.
A specialized quad set engineered for fish and hybrid shapes that demand extra drive. The stiff fiberglass construction ensures reliable performance and hold, even when pushing hard through turns. It provides the perfect balance of stability and pivot for those looking to get more out of their wider-tailed boards.
$196.00
More Matt Biolos options
Matt Biolos Thruster
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Matt Biolos Split Keel Quad
$160.00
FCS Split Keel Quad
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FCS Matt Biolos Fin
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FCS II Thruster
$170.00
FCS II Matt Biolos PC Carbon Fins
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FCS II Matt Biolos Fins
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FCS II Matt Biolos Fin Set
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FCS II Mayhem Fins
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FCS Lost MB Split Keel Quad
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Who it's for
- Surfers seeking maximum velocity on wide, fish-style boards
- Performance riders wanting a blend of pivot and predictable hold
- Versatile surfers looking to modernize their hybrid or fish shapes
Who should skip it
- Owners of boards with Futures or alternative fin box systems
- Lightweight surfers who prefer a highly sensitive and whippy feel
- Budget-conscious surfers looking for basic or entry-level fin replacements
Performance breakdown
Drive and Acceleration
The upright keel template generates significant speed through flat sections.
Hold and Control
High surface area provides reliable bite during aggressive rail turns.
Pivot Capability
Balanced design allows for tight, responsive turns on wider tails.
Construction Rigidity
Performance Glass maintains stiffness under heavy load for consistent feedback.
Installation Ease
FCS II system allows for tool-less, rapid fin swaps.
Small Wave Versatility
Optimized to maximize speed in weaker, mushier surf conditions.
Key Specs
Material
Performance Glass
Fin System
FCS II
Fin Type
Quad
Board Compatibility
Fish and hybrid models
Flex
Stiff
Max Rider Weight
190 lbs
Know before you buy
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