The H4 looks and surfs differently from 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: The lower section produces maximum acceleration, while the hatchet like tip creates stability & control. CENTRE FIN PROFILE: Highly raked elliptical outline reduces drag, and offers a 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 a 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. DISCLAIMER: 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. GUARANTEE: This product is fully guaranteed against faulty workmanship and materials for 1 year. SMALL (55Kg - 70Kg / 120 - 155 Lbs)MEDIUM (65Kg - 80Kg / 145 - 175 Lbs)LARGE (75Kg - 90Kg / 165 - 200 Lbs) Fin Base (inches) Base (mm) Depth (inches) Depth (mm) Area (inches) Area (mm) Sweep Deg° Foil SML Side 4.36 110.6 4.34 110.1 14.29 9221 38.3° Flat SML Ctr 4.29 108.8 4.49 113.9 13.82 8917 37.2° 50/50 MED Side 4.48 113.6 4.45 113.0 15.07 9721 38.3° Flat MED Ctr 4.40 111.7 4.61 117.0 14.58 9405 37.2° 50/50 LRG Side 4.59 116.5 4.57 115.9 15.84 10221 38.3° Flat LRG Ctr 4.52 114.6 4.73 120.0 15.33 9893 37.2° 50/50 View the FCS Fin Data page for Base/Depth/Area/Foil information.