The A4C series has undergone extensive testing before being put into production. This testing process resulted in many refinements and improvements to the series, easily making them the most versatile fins in our CNC range.
This series also has a wide range of sizes. These sizes cover a broad spectrum of fin combos, from twinzers to thrusters. We'll provide more details on the different possible combinations below.
The A4C is a combination of our original A3 and XPD2 designs. We combined the best characteristics of the two into a fresh design that would eventually replace these older designs. We added several different sizes to make this series as versatile as possible.
The shape of this series features a strong cutaway at the base and a reverse curve in the upper portion of the tip, adding more tip area. The trailing edge of the fin is shaped like an "S" in profile to better control the water flow off the trailing edge of the fin. This aspect is similar to the XPD2; all these features have been enhanced. Coupled with the PHAT FOILS, it further enhances the water flow on and off the fin.
The consensus is that these fins are total winners for the general consumer as they are easy to get your head around and don’t have a lot of visually unusual shapes. Of course, once you start looking closer, there is much more going on than your typical dolphin fin, but the more conventional shape makes them much more approachable for the average surfer. This is a good thing in our minds as it will attract more people to try something different, and once they do, they will be blown away.
Two of the primary fins in this series recently received a redesign. The A4C-500 and A4C-550 have been modified to use the new BLENDED-WING profile for a more significant performance boost. This type of foiling bends the fin's profile just over halfway up. It allows the tip to be thinned out, improving flex and enhancing the inside foils. After extensive testing, we are convinced these are an improvement over the originals.
The addition of the A4C-500CK KAHI center fin has also enhanced the versatility of this series. These center fins are a game-changer in a thruster setup, allowing it to feel and behave much more like a quad. They maintain speed through turns and add looseness without losing holding power!
This new series' fins feature our PHAT FOILS and HOLOFOILS and are available with GEARBOX, DUAL TAB, and FUTURES bases.