The Greenough 4-A fin works in just about anything! It has been the staple fin of True Ames for the best part of 40 years and is still the most popular single fin design out there

A very well balanced fin, the full base and moderately flexible tip provides the perfect balance of drive off the bottom and a sharp 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. A fin that can do it all, throw one in your board and feel for yourself what the hype is about!!