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FCS II H4 Fin Thruster Set

FCS II H4 Fin Thruster Set
The FCS II H4 is a surfboard fin that looks and surfs differently to any other fin. Constructed using precision Swiss engineering combined with a highly evolved template provides unprecedented levels of predictability and control through manoeuvres and at high speeds.
Side Fins
Base: 4.48" or 113.6mm
Depth: 4.45" 113mm
Area: 15.07" or 9721mm
Sweep Deg: 38.3
Foil: Flat
Center Fin
Base: 4.4" or 111.7mm
Depth: 4.61" or 117mm
Area: 14.58" or 9405mm
Sweep Deg: 38.3
Foil: 50/50
Side Fins
Base: 4.59" or 116.5mm
Depth:  4.57" or 115.9mm
Area: 15.84" or 10221mm
Sweep Deg: 38.3
Foil: Flat
Center Fin
Base: 4.52" or 114.6mm
Depth: 4.73" or 120mm
Area: 15.33 or 9893mm
Sweep Deg: 37.2
Foil: 50/50


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.
    • 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 H4 Fins are used in conjunction with a sport that is considered dangerous. The manufacturer and retailer assume no responsibility for injuries to persons or property caused by use, misuse or inability to use this product.
  • This product is fully guaranteed against faulty workmanship and materials for 1 year.

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