Lib Tech Poly Reinforced Fin Set
Best durable fin upgrade for surfers seeking reliable board compatibility.
This five-fin quiver is the ultimate Swiss Army knife for your surfboard, letting you toggle between tri, quad, and hybrid setups on the fly. The rigid, glass-filled construction prioritizes raw speed and responsiveness, though you’ll need to be comfortable with a proprietary box system to unlock that versatility.
$49.99
at
Lib Tech (official)
Who it's for
- Surfers frequenting shallow breaks or rocky shorelines
- Experimental riders who enjoy tweaking their setup during a session
- Performance-oriented surfers seeking a nimble and agile board feel
Who should skip it
- Surfers owning boards from multiple different manufacturers
- Purists who prefer the rhythmic spring and load of fiberglass
- Technical riders looking for highly specific specialized fin geometries
Performance breakdown
Configuration Versatility
Five-fin setup allows seamless transitions between tri, quad, and hybrid configurations.
Construction Rigidity
Glass-filled material delivers a stiff, responsive feel during high-speed turns.
Hydrodynamic Efficiency
Leading foil design optimizes water flow for consistent speed and control.
System Compatibility
Proprietary box requirement limits usage to specific Lib Tech boards.
Maneuverability
Designed for a loose, performance-oriented ride in varied wave conditions.
Installation Ease
Included fin key makes swapping setups straightforward at the beach.
Key Specs
Material
Glass filled
Fin System
FCS II
Number of Fins
5
Included Items
Fin key
Compatibility
Lib Tech FCS II fin boxes only
Board Type Compatibility
Shortboard
Fin Flex Pattern
Stiff
Fin Set Configuration
5-Fin Set
Leading Fins Height
4.625 inches
Leading Fins Base
4.44 inches
Know before you buy
Still have a question?
Ask Metto anything about the Lib Tech Poly Reinforced Fin Set before you decide.
