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Designed by Malibu legend Greg Liddle, the L-Flex fin was originally intended to be paired with the ‘modified displacement hull’ surfboards he became famous for pioneering beginning in 1968.
The practical note from hull riders is that the thicker Volan section runs stiffer than the standard glass, so this is the firmer, more planted version of the L-Flex.
On a displacement hull or speed-oriented mid-length this is the designed-for fin when you want drive and stability over spring, and it earns its keep in bigger, faster waves where the extra stiffness keeps it from washing out. If you want the springier feel out of the bottom turn that hull riders favor, go to the standard glass L-Flex; for a do-everything single, the Greenough 4A is the more universal pick.
The L-Flex is Greg Liddle's single fin template, drawn in 1968 to complement the modified displacement hulls he pioneered, with a slender outline and thin precision foil. This version is built by True Ames in Volan, a thicker section that runs stiffer than the standard glass build. Sizes run 7.5", 8.0", 8.5", 9.0" (and 9-W wide-base), 9.5" (and 9.5-W), and 10.0", with the W sizes adding base width for more drive. It suits displacement hulls and speed-oriented mid-lengths ridden from forward trim.
The review compares the two builds directly: the Volan is stiffer and heavier-feeling, while the standard glass springs more out of the bottom turn.
The review frames the L-Flex Volan as the specialized hull-and-speed fin and the 4A as the broader, more forgiving single across board types.
