Il tuo carrello
Il carrello è vuoto
True Ames
True Ames Greenough 4A Single Fin pinna surf
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 (222)
Disponibile
$69.00 – $110$84.00Saldi
Misura
Color
Designer: George Hamilton Perkins Greenough
La pinna
La Greenough 4-A Single Fin è il single fin più iconico, funzionale e versatile che si possa trovare, perché funziona benissimo su praticamente ogni tipo di tavola. La 4-A è il punto fermo di True Ames da oltre 40 anni ed è tuttora il design di single fin più diffuso che esista, grazie alle sue prestazioni complete ed equilibrate.
Forma | Profilo medio, base piena abbinata a una punta affusolata e moderatamente flessibile
Funzione | Una pinna che tiene quando ti serve e che rilascia al momento giusto
Sensazione | Neutra-positiva, perfettamente equilibrata, una pinna che dà drive in uscita dal bottom e ha una reattività precisa nelle curve ad arco
In generale | Versatile, pensata per ogni forma di tavola e ogni condizione
Specifiche
CostruzioneFibra di vetro piena
Misure6.5 – 10.5
Colori9 opzioni
Fascia di prezzo$69.00 – $110
DisponibilitàDisponibile
La scheda tecnica
Misure, carattere e tavole compatibili in un colpo d'occhio.
Tocca per ingrandire
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.
Dettagli tecnici
Specifiche che nessun altro rivenditore pubblica.
RAKE~33–35°
Moderate-to-heavy. More swept than a pivot fin (~28°), less than a hatchet (~40°).
Foil50/50 simmetrico
Industry standard for all single fins — equal shape on both sides for balanced rail-to-rail performance.
Box pinnaBox longboard US standard (slot da 10.75")
Screw + plate. Does NOT fit Futures or FCS boxes. For 2+1 setups, buy the 2+1 Combo pack.
CostruzioneFibra di vetro E-glass piena, anima in legno
Matte finish. Volan version uses hand-laid volan cloth with raw finish — flex from the body, not just the tip.
Origine del templateGeorge Greenough, ~anni '60
Inspired by bluefin tuna caudal fins. High-aspect-ratio design that launched the shortboard revolution.
Upgrade
Perché il Volan?
Volan is a woven fiberglass cloth laid by hand and finished with a resin that cures to a warm amber tint. It flexes differently than solid fiberglass — more spring, more life, more feel through turns. Where solid glass is stiff and direct, volan breathes with the wave.
The hand-laid process means each fin has subtle texture and character. It's heavier, which adds momentum through flat sections. Surfers who ride volan describe it as "warmer" — the fin does more of the work, trimming and holding without demanding constant input.
Shop the True Ames Greenough 4A Single Fin pinna surf Volan ›
RECENSIONI
Cosa ne dicono
The most iconic, functional, and versatile single fin available.
The right fin for most mid-lengths, eggs, and any single-fin log where carving matters more than parking on the nose — the template you end up measuring every other single against. It wakes a board up: real drive off the bottom, a long held arc through the turn, then a clean release. Go volan for flex through the whole fin on a heavier board, and go 4C instead if your priority is noseriding and tight pivots.
ALTRO SU QUESTA PINNA
The Greenough 4A is a single fin designed by George Greenough, made by True Ames, with a full base, long swept rake, tapering tip with moderate flex, and a symmetrical foil. Greenough drew the outline from the tails of tuna and dolphins. It comes in sizes from 6.5" to 10.5": 6.5"-8.5" for shortboard single fins and 2+1 boards, 7.5"-9" for speed shapes and mid-lengths, and 9"-10.5" for single-fin longboards. A volan version is also offered, which carries flex deeper through the body of the fin.
$69.00 – $110