FCS II H4 - Medium Thruster
The H4 looks and surfs different to any other fin. Precision Swiss engineering matched with a highly evolved template provides an unprecedented level of control and predictability at high speeds.
Overview
UNIQUE TEMPLATE
Radically different side & centre fin templates create a powerful fin set with ultimate speed & drive.
SIDE FIN PROFILE: Lower section produces maximum acceleration, while hatchet like tip creates stability & control.
CENTRE FIN PROFILE: Highly raked elliptical outline reduces drag, and offers feeling of predictability when releasing through turns.
FIN FOILS TEMPLATE: Thicker base with tapered tip optimises flex & regulates the release of energy during rail to rial transitions.
Ideal Conditions
A wide range of conditions, particularly good in critical overhead waves.
Board Types
Designed to fit the FCS II Fin System.
Recommended for performance shortboards with moderate-to-low rocker.
Fin Family
Accelerator: Find Control. Speed, flow and response with added control.
NEW CONSTRUCTION
- PRECISION SWISS ENGINEERED: Creates perfect synergy between fin geometry & HI-FI materials, giving smooth & predictable feel.
- HIGH DENSITY UNI-DIRECTIONAL CARBON FIBRE: Light & super strong with custom orientation to transfer more of your energy into speed than any other fin.
- DYNAMIC TRAILING EDGE: Internal composite morphs under extreme load, enabling the fins to be pushed harder without sliding out.
- INNOVATIVE PRODUCTION: Highly specialised robotic automation combined with camera assisted quality control, ensures absolute accuracy.

THE FCSII SYSTEM
After years of development and testing we launched a revolutionary new system which seamlessly connected the 3 essential elements in surfing; the surfer, the surfboard and the fins. One of the reasons for the success of the FCS II system was the involvement of the world's best surfers in the development process, their educated feedback and ability to push the system to its limits was incredibly valuable during development.
FCS II made it possible to install and remove your fins in seconds, without the need for any screws or tools. Game changer