http://www.f4fins.com/4 Fins was started by avid formula windsurfing racers in the San Francisco Bay because good racing fins had become either too expensive or unobtainable. The wind and water conditions, as well as the experienced racing fleet in the San Francisco Bay, provide the ideal proving grounds for developing the next generation racing fins. With help from Boogie of C3 on the design and manufacturing, combined with daily testing in the Bay waters, refinements can be quickly incorporated, resulting in an improved and constantly evolving product. Now with a Formula world championship and several national titles we are introducing a new design for 2013.
D2 -Medium Wind : Our most popular fin, the D2 is optimized for medium to strong winds. Expert riders prefer soft flex for control and speed. custom sizes to 56cm and flexes in XXS, XS, S,M available and flexes- XXXS, XXS, XS, S, M.
HA - Heavy Air : The HA is designed for control at speed in windy conditions. Its a high aspect design with a 10.2% foil section. It has a low surface area with an efficient foil section. custom sizes up to 64cm and flexes in XXXS, XXS, XS, S, M.
LA- Light Air : The LA is designed for light air and optimized for slalom racing in sizes from 44-64cm. The LA in XS helps to foil the board and maintain a plane through jibes. custom sizes to 64cm and flexes in XXXS, XXS, XS, S, M.
