True Ames Greenough 4A Surfboard Fin

Nat Young won the 1966 World Championships on a George Greenough fin. The 4A is the descendant of that geometry, and it still does what it did then: full base for drive, a flexible tip that wakes the board up.

This is the True Ames Greenough 4A, a high-aspect template with a tapering, moderately flexible tip. Solid E-glass fiberglass with a flat matte finish, a 50/50 symmetrical foil and moderate rake around 33 to 35 degrees. The full base holds drive while the narrow tip gives you the response. It fits standard US longboard boxes, screw and plate. A Volan version exists alongside this solid glass one.

Details

• Solid E-glass fiberglass, flat matte finish
• High-aspect template, full base, flexible tip, 50/50 foil, moderate rake (~33 to 35 degrees)
• Sizes and area: 6.5" (22.86 sq in), 7.0" (24.89), 7.5" (26.86), 8.0" (28.85), 8.5" (32.19), 9.0" (36.13), 9.75" (39.93), 10.0" (43.85), 10.5" (48.44)
• Standard US longboard box, screw and plate
• Colors: Black, Red, Green, Blue, Purple, Kelp, Smoke, Clear, Sandbar, Yellow, Orange