True Ames Greenough 4C Fin 9.5"
The Greenough 4-C is one of the most classic, fundamental single fin designs for a longboard...ever! The man behind this revolutionary fin is George Greenough, whom the surf world is forever indebted to for his wave-riding performance innovations beginning in the 60's. Greenough paved the way from traditional logging to more progressive surfing in the pocket through the development of his Velo-Spoon kneeboard designs. To complement his kneeboards, Greenough found inspiration from mother nature for his fin templates through studying the tail fins of tuna-one of the fastest and most maneuverable fish in the ocean. The subsequent high-aspect ratio design he created allowed surfers to place themselves in more critical parts of the wave and execute more radical turns; and it ultimately ushered in a new era of high performance capability. The 4-C is a direct descendant of Greenough's "Stage 4" tuna fin-inspired designs from the early '70s; this iteration was conceived earlier on in the evolution of the Greenough and True Ames collaboration that ultimately led to the 4-A. The 4-C template represents the first step taken in the move away from a traditional pivot fin. Greenough kept the upright nature and minimal rake of a pivot fin, but shaved off a considerable amount of surface area in pursuit of a more high-aspect ratio design. This translates to a higher performance fin that is even more maneuverable, and faster down the line with less drag.
Unique design: semi-pivot template but with less area. Works great on all types of longboards. Solid fiberglass construction, flat matte finish.
Color: Green