![True Ames Greenough 4-A Single Fin 9.75 Red](http://ccsurf.com/cdn/shop/files/CaliforniaClassicRed_7f072240-97db-4740-aa0d-5b55880c14e9_{width}x.webp?v=1704837516)
There is a reason this is the most iconic, functional and versatile single fin available...it works on just about anything! The Greenough 4-A has been TA's bread and butter for over 40 years now, and it is still the most popular single fin design there is.
A truly well-balanced fin...the full base coupled with the tapering, moderately flexible tip provides a solid amount of drive off the bottom, and an acute responsiveness through arcing turns. Designed for both speed generation and spending time surfing in the pocket, the 4-A is a fin that will hold when you need it to and release when the time is right.