Lib Tech Twin + Trailer Fin Set
Best versatile upgrade for surfers seeking speed and controlled maneuverability.
These fins trade rigid stability for a loose, playful feel that thrives on spontaneous turns. The massive adjustability in the fin box lets you dial in your board's personality on the fly, though you are locked into a specific system that demands commitment to the ecosystem.
$79.99
at
Lib Tech (official)
More RRIP's options
Who it's for
- Environmentally conscious surfers seeking sustainable hardware options
- Intermediate surfers wanting more drive in their twin fin setups
- Aggressive riders who frequently surf near rocky breaks or reefs
Who should skip it
- Surfers owning boards with traditional fin plug systems
- Advanced surfers who prioritize precise kinetic response and flex
- Style-focused riders who want a classic or premium visual aesthetic
Performance breakdown
Maneuverability
The twin-trailer setup encourages snappy, loose turns in smaller surf.
Adjustability
Over half an inch of movement allows for precise board tuning.
Sustainability
Up-cycled material construction reduces environmental impact without sacrificing structural integrity.
System Compatibility
Proprietary design limits use strictly to Lib Tech FCS II boxes.
Installation Ease
Included fin key makes quick adjustments on the beach effortless.
Speed Generation
Designed for rapid acceleration, perfect for generating speed in flat sections.
Key Specs
Lead Fin Height
5.25 inches
Lead Fin Base
5.12 inches
Trailer Fin Height
3.9 inches
Trailer Fin Base
3.88 inches
Fin System
FCS II
Material
Up-cycled
Adjustability
5/8 inches fore and aft
Performance Focus
Maneuverability
Number of Fins
3
Foil Type
Double foil
Know before you buy
Still have a question?
Ask Metto anything about the Lib Tech Twin + Trailer Fin Set before you decide.
