The True Ames Single Tab Tri-Fin Set design inspiration and key elements include... taking everything they've learned about making glass on tri fins over the past 40+ years and rolling all of that into this design. The TA tri is another template from our in-house collection and is our version of the tried and true thruster design that was first popularized in the early 80's and has continually evolved since.
Fin Size Detail
| Size | Height | Base | Area |
| Small | 4.40" | 4.38" | 14.51"² |
| Medium | 4.53" | 4.53" | 15.43"² |
| Large | 4.72" | 4.66" | 16.31"² |
Product Info
The True Ames Single Tab Tri-Fin Set design inspiration and key elements include... taking everything they've learned about making glass on tri fins over the past 40+ years and rolling all of that into this design. The TA tri is another template from our in-house collection and is our version of the tried and true thruster design that was first popularized in the early 80's and has continually evolved since.
Fin Size Detail
| Size | Height | Base | Area |
| Small | 4.40" | 4.38" | 14.51"² |
| Medium | 4.53" | 4.53" | 15.43"² |
| Large | 4.72" | 4.66" | 16.31"² |
Product Details
- Fin Type: Single Tab
(compatible with Futures® fin boxes) - Fins in Set: Three
- Fin Configuration: Thruster
- Fin Tech: Solid Fiberglass, Flat Insides
- Finish: Raw, Sanded
- MPN: FUTTATRIMSFSMKCLR, FUTTATRILSFSMKCLR
Product Construction
E-Glass
In order to achieve the performance characteristics that have become the standard of solid Fiberglass surf fins, True Ames uses E-Glass. It is the most common type of Fiberglass used in surfboard construction, and its qualities translate with great success into fin construction. E-Glass has excellent flex characteristics and performance longevity, while featuring the bonus of outstanding color vibrancy that allows for the variety of colors True Ames offers.
Additional Info
These 3 fins are all the same size and feature a solid all-around profile made for all-purpose high performance surfing. Built for speed, increased drive, fluid turns, and attacking the wave with precision & control.
Why You'll Love This Fin
Medium body & medium rake. Features precision foils with calculated area distribution for maximum performance. Solid fiberglass construction, raw finish.
Form | Balanced thruster template with medium rake and a clean, neutral outline.
Function | Speed, drive, and control with a consistent, predictable release.
Feel | Smooth, responsive, and controlled with confident rail-to-rail flow.
Overall | A dependable, all-around thruster built for everyday performance.
History & Origin
True Ames branded products are born from decades of hands-on craftsmanship and a deep commitment to preserving and evolving surfboard design. Since the early 1970s, True Ames has worked alongside some of surfing’s most influential shapers and designers, building a reputation for precision manufacturing and timeless templates. Drawing from that lineage, True Ames originals are developed through thoughtful refinement, rider feedback, and an unwavering focus on performance, durability, and feel. Each design reflects a balance of heritage and innovation — honoring the foundations of surf history while continuing to push functional design forward.
Warranty
This product is backed by a warranty from the manufacturer. Click below for details on the warranty policy for True Ames products.
Returns
If you are not 100% satisfied with your purchase you may return it for a refund, or exchange within 30 days of receiving your order.
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