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True Ames Greenough 4A Single Fin
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The Greenough 4-A Single Fin is the most iconic, functional and versatile single fin available, because it works extremely well on just about every type of surfboard. The 4-A has been True Ames' bread and butter for over 40 years now, and it is still the most popular single fin design there is due to it's all-around and well-balanced performance.
Form | Medium profile, full base coupled with a tapering & moderately flexible tip
Function | A fin that will hold when you need it to and release when the time is right
Feel | Neutral-positive, perfectly-balanced, a fin that will drive off the bottom, and have an acute responsiveness through arcing turns
Overall | Versatile - designed for all board shapes and surf conditions
Specifications
| Construction | Solid Fiberglass |
| Fin System | Standard US Center Box |
| Profile | Medium profile, full base with tapering tip |
| Flex | Moderately flexible tip |
| Sizes Available | 6.5", 7.0", 7.5", 8.0", 8.5", 9.0", 9.75", 10.0", 10.5" |
| Recommended Board Types | Longboards, mid-lengths, hulls, gliders, shortboard 2+1 setups |
| Designer | George Greenough |
| Made In | USA |