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True Ames
True Ames Greenough 4A Volan Single Fin quilla
The Greenough 4-A Single Fin is the most iconic, functional and versatile single fin available, because it works extremely well on just about every type of surfboard.
★★★★★5.0 (57)
En stock
$95.00
Tamaño
Color — Volan
Designer: George Hamilton Perkins Greenough
La quilla
La Greenough 4-A Single Fin es la single fin más icónica, funcional y versátil que puedes encontrar, porque funciona extremadamente bien en prácticamente cualquier tipo de tabla. La 4-A lleva ya más de 40 años siendo el pan de cada día de True Ames, y sigue siendo el diseño de single fin más popular que hay gracias a su rendimiento polivalente y equilibrado. Nuestras quillas Volan están afinadas con foils de precisión y con el flex adecuado. Los paneles Volan se laminan a mano y se plantillan de forma meticulosa para asegurar una orientación óptima del tejido y una resistencia superior, con el flex saliendo más del cuerpo que solo de la punta. Esto mejora la velocidad y la proyección desde el bottom y a lo largo de los giros, y convierte a nuestras quillas Volan en la cumbre de las características de flex de más alto rendimiento.
Forma | Perfil medio, base completa junto a una punta afilada y moderadamente flexible
Función | Una quilla que agarra cuando la necesitas y suelta cuando toca
Sensación | Neutra-positiva, perfectamente equilibrada, una quilla que da drive desde el bottom y responde con precisión en los giros amplios
En conjunto | Versátil: diseñada para todas las formas de tabla y todas las condiciones de surf
Especificaciones
ConstrucciónFibra de vidrio Volan laminada a mano
Medidas6.5 in – 10.5 in
Colores1 option
Rango de precios$95.00
DisponibilidadEn stock
Measurements & Sizing
Every 4A size with its measurements and the boards it suits. Rule of thumb: 1 inch of fin per foot of board, rounded up. For 2+1 setups drop 1.5–2" from your single-fin size — the side bites add hold, so the center fin can be smaller.
| Size | Height | Base | Area | Weight | Boards (single) | Boards (2+1 center) |
|---|---|---|---|---|---|---|
| 6.5" | 6.49" | 5.42" | 22.86 sq in | 227g | 5'6" – 6'6" | 6'0" – 7'0" |
| 7.0" | 7.09" | 5.67" | 24.89 sq in | ~255g | 6'0" – 7'0" | 7'0" – 8'0" |
| 7.5" | 7.55" | 5.95" | 26.86 sq in | ~280g | 6'6" – 7'6" | 8'0" – 9'0" |
| 8.0" | 8.11" | 6.09" | 28.85 sq in | ~305g | 7'0" – 8'0" | 8'0" – 9'6" |
| 8.5" | 8.51" | 6.42" | 32.19 sq in | ~330g | 7'6" – 8'6" | 9'0" – 10'0" |
| 9.0" | 9.14" | 6.93" | 36.13 sq in | ~355g | 8'0" – 9'0" | 9'6"+ |
| 9.75" | 9.71" | 7.09" | 39.93 sq in | ~380g | 8'6" – 9'6" | — |
| 10.0" | 10.08" | 7.42" | 43.85 sq in | ~400g | 9'0" – 10'0" | — |
| 10.5" | 10.63" | 7.91" | 48.44 sq in | 425g | 9'6"+ | — |
Size up if you're over 200 lbs, riding a narrow-tailed board, or surfing overhead+ waves. Size down for wide tails, small gutless surf, or if you want a looser feel. For 2+1 setups: the larger your side bites, the smaller the center fin can be.
Detalles técnicos
Especificaciones que no publica ninguna otra tienda.
RAKE~33–35°
Moderate-to-heavy. More swept than a pivot fin (~28°), less than a hatchet (~40°).
Foil50/50 simétrico
Industry standard for all single fins — equal shape on both sides for balanced rail-to-rail performance.
CajetínCajetín US estándar de longboard (ranura de 10.75")
Screw + plate. Does NOT fit Futures or FCS boxes. For 2+1 setups, buy the 2+1 Combo pack.
ConstrucciónTejido volan laminado a mano sobre fibra de vidrio
Raw, unpolished finish with natural amber tint. Flex comes from the entire body of the fin, not just the tip. Each fin has subtle hand-finished texture and character.
Origen de la plantillaGeorge Greenough, ~años 60
Inspired by bluefin tuna caudal fins. High-aspect-ratio design that launched the shortboard revolution.
Construcción
Por qué Volan
Volan is a woven fiberglass cloth — heavier, coarser, and more flexible than the solid fiberglass used in the standard 4A. It's laid by hand over the fin blank and finished with a resin that cures to a warm amber tint. No two volan fins look exactly the same.
The difference isn't cosmetic. Solid fiberglass flexes mostly at the tip — the body stays rigid, so energy transfers immediately. Volan flexes through the entire fin. It loads energy into turns and releases it progressively, giving a smoother, more connected feel. Surfers describe it as "warmer" — the fin does more of the work, trimming and holding without demanding constant input.
The extra weight is part of the design. A volan 4A is roughly 15–20% heavier than its solid fiberglass counterpart, and that mass adds momentum. Through flat sections and lulls, the fin carries speed instead of stalling. On a longboard trimming down the line, that momentum is the difference between making the section and bogging.
When to choose Volan
You ride a traditional longboard or glider
Volan's momentum and smooth flex match the trim-and-glide style of classic shapes. The fin carries you through sections instead of demanding constant pumping.
You prefer feel over precision
If you like a fin that loads into turns and releases gradually — more flow, less snap — volan rewards a patient, drawn-out style.
You surf point breaks or mellow walls
Down-the-line waves let volan's progressive flex and carry shine. You'll notice the difference most on long, open faces where trimming speed matters.
You want the classic look
The amber tint, raw cloth texture, and hand-finished irregularity are part of the appeal. Volan fins look like they belong on a traditional board.
When to stick with solid fiberglass
You ride a high-performance longboard or mid-length
If you're pumping, snapping, and surfing aggressively, solid fiberglass gives more immediate response and a stiffer drive through turns.
You surf punchy beach breaks
Short, steep waves reward the instant energy transfer of solid glass. Volan's progressive flex can feel sluggish when the wave demands quick changes.
You want the lightest possible setup
Solid fiberglass is lighter. For boards where swing weight matters — shorter single fins, 2+1 setups on mid-lengths — solid glass keeps the tail light.
Volan vs Solid Fiberglass at a Glance
| Volan (this fin) | Solid Fiberglass | |
|---|---|---|
| Flex Pattern | Full-body, progressive | Tip-focused, immediate |
| Weight | Heavier (~15–20% more) | Lighter |
| Feel | Warm, smooth, forgiving | Direct, precise, snappy |
| Speed Through Flat | Carries momentum | Needs pumping |
| Turn Response | Gradual load and release | Instant engagement |
| Finish | Raw amber tint, hand-laid texture | Matte, uniform |
| Best Waves | Point breaks, mellow walls, long lines | Beach breaks, punchy hollow waves |
| Best Boards | Traditional logs, gliders, hulls | HP longboards, mid-lengths, 2+1 setups |
Both versions use the same 4A template — same outline, same rake, same foil. The difference is entirely in how the fin flexes and how that flex translates to feel underfoot.
Want the stiffer, lighter version?
Shop the True Ames Greenough 4ASingle Fin quilla in solid fiberglass ›OPINIONES
Lo que dice la gente
The Volan layup springs from the trunk, not only the tip -- the full base still gives push off the bottom, but the whole fin feels alive under load.
Riders describe it as more powerful coming out of turns than a standard glass 4A.
The do-everything single fin for an egg or speed-shape mid-length: it trims fast, holds an arc, and unloads with snap on the way out, usually in the 7.5" to 8.5" band. It trades a little composure for spring and slip, so if your goal is planted noseriding on a heavy log, a pivot fin like the Heritage is the better tool.
MÁS SOBRE ESTA QUILLA
The Greenough 4A Volan is the George Greenough 4A template laid up in Volan, a thicker weave that flexes through the body of the fin rather than only the tip; True Ames orients the panel weave so the fin springs from the trunk. The template has a full base, moderate rake, and a tapering tip. It is offered in sizes from 6.5" to 10.5" and runs on eggs, mid-lengths, and a wide range of single-fin boards.
QUILLAS PARECIDAS
Greenough 4A (standard glass)›
The same template with more composure and less slip; the Volan trades composure for spring and speed.
Greenough 4C›
The more upright 4C wants to pivot from the tail where the 4A draws longer lines and wakes up softer waves.
Heritage›
Recommended instead for pure tail authority when noseriding a heavy log.
$95.00