Greenough 4-A Smoke Single Fin Size:10" curving towards those rails

curving towards those rails

and an acute responsiveness through arcing turns

The Greenough 4-A has been our bread and butter for close to 40 years now

this board has your back

These Astro's are built to fly

Greenough 4-A Smoke Single Fin Size:10" curving towards those railsThere 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