5.7" Upright Twin Fins – Natural Pro Glass | FCS Compatible (Set of 2)

Speed. Pivot. Instant Release.
The performance twin built for surfers who want tight pocket control without losing twin acceleration.
Designed for Australian conditions.

If you love the speed of a twin fin but want sharper turns and more vertical attack, the Eveley 5.7" Upright Twin is your template.

Unlike drawn-out keel twins, this upright design pivots faster, fits tighter in the pocket and releases cleanly off the lip — while still delivering the raw twin drive that makes fish and modern twins addictive.

Built from layered Natural Pro Glass, these fins offer direct power transfer and long-term durability.

Compatible with FCS (dual tab) systems.

Features

• Height: 5.7"

• Template: Upright performance twin

• Construction: Natural layered Pro Glass

• Flex: Medium–stiff drive flex

• Foil: Flat inside / performance outside foil

• System: FCS compatible dual tab

• Set: 2 fins

Performance

✔ Faster rail-to-rail transitions than keel twins
✔ Instant acceleration down the line
✔ Tighter arcs in the pocket
✔ Clean release off the top
✔ More responsive under the back foot
✔ Twin speed without excessive drift

This is a modern performance twin — not a retro trim fin.

Ideal For

• Fish surfboards

• Modern twin shortboards

• Twin mid-lengths

• Waist-to-overhead surf

• Beach breaks and punchy Australian conditions

• Surfers 65–85kg (flex and drive sweet spot)

Not sure if upright twins suit your board? See sizing and setup guides below.

Choose Eveley

• Performance-driven templates refined for real waves

• No gimmicks — pure function

• Built for Australian surf conditions

• Direct-to-surfer value

• Clean, timeless design

You’re not paying for marketing hype.
You’re paying for performance.

Specification

• Height: 5.7"

• Base: Performance upright outline

• Rake: Moderate (faster pivot response)

• Area Distribution: Drive balanced toward base

• Construction: Layered Natural Pro Glass

• Flex Pattern: Medium–stiff

• Compatibility: FCS dual tab

• Quantity: Set of two

Guides

Learn how to dial in your setup:

• Twin Fin vs Thruster — Speed vs Control
• Choose the Right Surfboard Fin Setup
• Surfboard Fin Size Guide
• Quad vs Thruster — Which Setup Is Faster?
• FCS vs Futures — Full Compatibility Guide

These guides help you choose correctly — and get the most from your fins.

FCS™ and FCSII™ are registered trademarks of Surf Hardware International Pty Ltd. Eveley Surf is not affiliated with or endorsed by Surf Hardware International Pty Ltd. All compatibility references to FCS and FCSII are for descriptive purposes only.