![FCS II H4 Tri Retail Fins](http://jsindustries.com/cdn/shop/products/1248085435634e.jpg?v=1677028967&width=640)
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![FCS II H4 Tri Retail Fins](http://jsindustries.com/cdn/shop/products/1610149307634e_2381eb3f-e8e5-4f5b-b201-b57b42f4d4a3.jpg?v=1677028978&width=640)
![FCS II H4 Tri Retail Fins](http://jsindustries.com/cdn/shop/products/79840374634e27_4177f0e5-6361-4d21-b070-8c45d6880d5f.jpg?v=1677028977&width=640)
FCS II H4 Tri Retail Fins
From $239.95
Size
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.
- 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.
Details
![](https://cdn.shopify.com/s/files/1/0548/8931/6455/files/jslogo.png?v=1657601787)