True Ames Greenough 4-A Longboard Fin - 9.75" PU All Alpha products are designed

All Alpha products are designed and manufactured exclusively in Huntington Beach

Fluid Foam

Glassing: 4 x 4 x 4 x 4 glassing

Taped shoulder seams for comfort and fit retention

True Ames Greenough 4-A Longboard Fin - 9.75" PU All Alpha products are designedThe 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