True Ames Greenough 4A Single Fin

The Greenough 4-A is a widely used single fin known for its versatility across a range of board types. Designed by George Greenough, it features a full base for stability and drive, a raked outline, and a moderately flexible tip for controlled turns and responsiveness. Suitable for longboards, mid-lengths, and 2+1 setups. Solid fiberglass construction with flat matte finish.

Sizes are in inches.