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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.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2025
$94.00