Your Cart
Your cart is empty
True Ames
L-Flex
Greg Liddle's L-Flex — the flex fin he drew in 1968 for his displacement hulls, in solid fiberglass, six heights and two wide-base options.A slender profile with a thin foil and engineered flex, in clear, smoke, blue, red and seafoam grey.
★★★★★5.0 (7)
In Stock
$89.75 – $107.50
new customer discount · applied automatically at checkout
Fin SystemSingle / Longboard Box
Size
Color
Designer: Greg Liddle
The Fin
Greg Liddle's L-Flex — the flex fin he drew in 1968 for his displacement hulls, in solid fiberglass, six heights and two wide-base options.
A slender profile with a thin foil and engineered flex, in clear, smoke, blue, red and seafoam grey. Liddle designed it to pair with the modified displacement hulls he pioneered — convex-bottomed boards borrowed from boat hydrodynamics, which trim forward and find plane in waves with less power, and which need a fin with real, controlled flex to work at all. More than 40 years on it is still one of the templates True Ames is known for, and it has spread well beyond hulls.
How that reads
A thin, flexy foil loads as the rail engages and gives the energy back down the line, which is where the projection comes from: the board accelerates out of a turn instead of merely changing direction. On a sensitive board it feels alive underfoot, positive through the turn rather than dead and planted. The wide options carry a slightly longer base, which trades a little of that liveliness for stability.
Who it suits
Hulls first, and after that any board built for acceleration, full rail carves and smooth transitions — mid-lengths and eggs that want to be trimmed rather than pumped. Not the fin for a surfer who wants the tail locked down and the board stiff underneath; this one is meant to move.
Specifications
ConstructionSolid fiberglass
ConfigurationSingle fin
Made byTrue Ames, Santa Barbara CA
Sizes7.5 – 10
Colors3 options
Price Range$89.75 – $107.50
AvailabilityIn Stock
Reviews
What people say
This glass version is the one most hull riders favor for spring out of the bottom turn.
From True Ames
Designed to make a board feel energetic and alive through down-the-line projection and positive response — the flex loads as you trim and projects you down the line, then springs you out of the turn.
Our take
On a Liddle-style hull it is the intended match, delivering the acceleration, full-rail carves, and smooth transitions the hull is shaped around; on a speed-oriented mid-length it makes the board feel alive. It rewards forward trim and rail engagement — if your board is not a hull or speed shape, the Greenough 4A is more forgiving across the board.
More About This Fin
The L-Flex is Greg Liddle's single fin, drawn in 1968 to complement his modified displacement hulls with convex bottom contours, and is made by True Ames. It has a slender outline with a thinner, precision foil tuned for flex. Sizes include 7.5, 8, 8.5, 9, 9.5, and 10 inches, with 9-W and 9.5-W wide-base options that add base width for boards needing more drive low in the foil. It is intended for displacement hulls and speed-oriented mid-lengths.
Similar Fins
Mentioned in the review — Greenough 4A · L-Flex Volan — not something we carry.