Finology
Everything about this fin, explainedOverview About this fin What it is, who it suits
Futures John John Florence Pro Techflex Thruster Fins | The World-Title Standard for Power and Precision
Stepping into the Pro size JJF Techflex is like shifting your surfing into top gear. This is the exact template John John Florence leaned on for his three World Championships, offering a ride that is rock-solid at high speeds yet remarkably springy when you need to whip it into the pocket. Whether you're staring down a heavy slab or looking to lace together high-speed carves on a screaming point break, these fins deliver the "daily driver" versatility required for elite-level performance in Australian conditions.
Key Technical Features
- Techflex Construction: Engineered for the power surfer, Techflex is stiff and stable. It eliminates the "chatter" often felt at high speeds, providing a predictable feel that allows you to trust your rail in waves of consequence.
- Pro-Specific Sizing: By splitting the difference between a Medium and Large, this "Pro" template offers a slight reduction in surface area from the standard Large. This means you get the release and control needed for explosive turns without losing the drive required for big sets.
- Neutral Template Category: Designed as an all-around performer, the neutral sweep ensures these fins don't feel too "tracky." They provide a balanced mix of pivot and hold, making them the ultimate choice for a one-board quiver.
- 3.4 Ride Number: Leaning heavily into the Speed Control category, these fins provide a dampened, connected feel. When the surf is pumping — head-high to double overhead — these fins give you the confidence to push as hard as you want.
Why You'll Love It
The JJF Pro Techflex is for the surfer who doesn't want to choose between power and manoeuvrability. If you're riding a step-up or a performance shortboard like a Pyzel Ghost and the swell starts to pulse, these fins provide the necessary bite to hold your line while remaining loose enough to blow the tail when the section presents itself. It's the ultimate high-performance thruster set for those who demand world-class reliability.
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Construction TechflexLight like Honeycomb. Stiff like fiberglass.
Engineered stiff and light. Solid and engaged on big drops, then light and responsive the moment you engage the rail. Sits just above the fiberglass line — built for powerful surfers and powerful waves.
Ride Number 3.4 · Speed control
Techflex spans 3–4.5; this fin sits at 3.4.
Stiff and light
Speed control + responseFor surfers who want big-wave hold with a bit more spring off the lip. The honeycomb core keeps the weight down, the carbon keeps it stiff and engaged. Solid rail turns and drive down the line, springy when you ask for it.
3K carbon
Controlled flex3K carbon runs along the base and the tip, making the fin as light as Honeycomb while holding the stiffness of fiberglass. The result is a vertical flex pattern — control and drive down the line, lively and free off the lip.
Signature Techflex
Ridden by John JohnJohn John Florence designed his Techflex signature as a larger complement to the F4 template. Medium base carrying through to a medium tip, and his weapon of choice in just about any condition.
Specifications This fin's numbers Area, height, base, angle and foil
Ride Number 3.4 · Speed control How Futures rates every fin
Feel = Flex + Rake + Foil
Futures rates every construction on a 1–10 scale. Low numbers hold a predictable line and control your speed. High numbers generate speed and snap out of turns. Three physical properties combine to produce it, and they are not weighted equally — flex counts for the most, then rake, then foil.
Solid, engaged, predictable. Built for powerful conditions.
All-around. Drive, hold and looseness in equal measure.
Springy, fluid, responsive. Built to create speed from nothing.
Flex is how much the fin bends under load — soft generates speed, stable controls it. Rake is the sweep of the outline — upright turns tight, laid-back holds long. Foil is the cross-section — a V or V2 foil feels fluid, a flat foil feels engaged.
Sizing Which size am I? Sized to rider weight, not board length
Futures sizes fins to the surfer, not the board. Find your weight, then fine-tune with construction and template once you know your size.
XSmall / Grom
35 – 50kg
Small
45 – 60kg
Medium
55 – 80kg
Large
75kg+
The bands overlap on purpose. If you sit on a boundary, size up for more hold and drive, or down for a looser, easier-to-turn feel.
About Futures
