Become a FIN+ Member

FIN+ is a membership program allowing you to rent fins
as much as you want, for as long as you want.
No contracts, no commitments.

Learn More

10” greenough 4a single fin yellow

$99.00 USD Sale Save

True Ames

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 our bread and butter for close to 40 years now, and 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.

Single Fin - Single Fin

Sallas X Keani

SALLAS X KEANI

From $80.00 USD

Flying Diamonds of California

3 colors available

CJ Power Flex

CJ POWER FLEX

From $85.00 USD

Flying Diamonds of California

5 colors available

CJ Cali Pivot

CJ CALI PIVOT

From $95.00 USD

Flying Diamonds of California

6 colors available

Sea Monnster Pivot

SEA MONNSTER PIVOT

From $90.00 USD

Flying Diamonds of California

4 colors available

Sallas X Kelis

SALLAS X KELIS

From $75.00 USD

Flying Diamonds of California

4 colors available

NPJ 2+1 Center Fin

NPJ 2+1 CENTER FIN

From $65.00 USD

Flying Diamonds of California

4 colors available

TJ Pro Flex Center

TJ PRO FLEX CENTER

From $75.00 USD

Flying Diamonds of California

3 colors available

TJ Power Drive

TJ POWER DRIVE

From $75.00 USD

Flying Diamonds of California

3 colors available

Sallas Spiral

SALLAS SPIRAL

From $80.00 USD

Flying Diamonds of California

6 colors available

Skvarna Equalizer

SKVARNA EQUALIZER

From $90.00 USD

Flying Diamonds of California

4 colors available

TJ Edge Sides

TJ EDGE SIDES

From $55.00 USD

Flying Diamonds of California

3 colors available

Skindog Twin Fins

SKINDOG TWIN FINS

$95.00 USD

Flying Diamonds of California

4 colors available

Sold Out
Sold Out

TJ Quads

TJ QUADS

From $60.00 USD

Flying Diamonds of California

Sold Out
Sold Out
Sold Out
Sold Out