The ultimate wave riding foil. The overall shape of the foil offers the optimum balance between glide, manoeuvrability and control. Work the slightest wave with surgical precision and pump up to the peak effortlessly.

The Ultimate Wave Riding Foil

The Silk isn’t just another surf foil—it’s a game-changer. Everyone who rides it says the same thing: it’s the best they’ve ever ridden. No other foil gets this kind of universal praise.

Sounds too good to be true? It’s not. The only negative comment online came from someone using it with a non-AFS mast. Every other review? They all say the same thing—nothing rides like the Silk.

Who's it for?

Disciplines: Wave, Freeride

Skill Level: Intermediate, Advanced

Riding Style: A surf focused wing that shines riding swell or waves. Also a top choice for freeride and shredding maneuvers like tacks & 360's.

Why The Silk Feels Different

Stability & Control - Forget About Pitch Adjustment

You might think the focus on pitch control your foil requires is just a part of foiling - but it doesn't have to be. The Silk is ridiculously stable from the moment you step on it, staying balanced no matter the speed or wave size.

• No more fighting to keep the foil balanced
• Lets you focus 100% on carving, not on keeping the foil stable

Stays in the Wave—No More Outrunning Swell

Sick of dropping off the back or shooting ahead too fast?

The Silk keeps you locked in the power zone, whether it’s head-high surf or downwind chop.

Surprising Glide

Think you need a 10AR foil to stay on a swell? The Silk will change your mind.

• Slim, slippery design → High glide without losing maneuverability.
• Unlike high-aspect foils, you can actually carve while staying with the swell.
• People even SUP paddle downwind on Silks—crazy for an 8AR foil.

Carve Like Never Before

Most foils force a compromise: stability or maneuverability. Not the Silk.

• Unreal rail to rail—carve as hard as you want without sliding out.
• Feels like it’s on rails, but still responsive to every input.

Silky Smooth — Less Drag, More Speed

The Silk’s thin profile and tubercles make it effortlessly smooth through the water. You don’t realize how much drag your current foil has—until you ride the Silk.

Ultra-Lightweight—2.5kg Full Setup

The Silk immediately feels different the moment you pick it up.

• 2.5kg total weight (850, 142, UHM 75)—one of the lightest foils on the market.
• Less swing weight = faster, more controlled turns.
• Bonus: Easier to carry down the beach.

Monoblock Design—Why It Matters

The front wing and fuselage are one piece, making the Silk incredibly stiff and efficient.

• Less flex, more direct response.
• Slim connection = maximum water efficiency.

Built Different—World-Class Construction

Made in France, Not a Generic Factory

Most foils are mass-produced in China. AFS owns their own factory in France, allowing for:

• Tighter quality control
• Higher level of finish
• More advanced carbon construction

Ultra High Modulus (UHM) Carbon

By using UHM carbon, AFS achieves:

• A stiffer, lighter foil
• More refinement & design freedom
• Better performance in every condition

Tubercles: What Are They & Why Do They Matter?

Tubercles (those bumps on the leading edge) have one job—to delay flow separation.

What’s flow separation?
It’s when water stops following the foil before the trailing edge, causing instability, inconsistent lift, and loss of control. Every foil deals with this problem.

Tubercles fix this by creating tiny vortices that keep water attached to the foil for longer, making the Silk:

• More stable at all speeds—no unexpected lift changes.
• Incredibly smooth through turns—even at high bank angles.
• More predictable in turbulent water—great for white water and choppy conditions.

You know when your foot pressure changes when a wave builds power or your speed changes?
The Silk eliminates that. It stays steady no matter what, so you can push harder with total confidence.

Are There Any Downsides?

Only one—a slight reduction in absolute top speed. That’s why AFS race foils don’t use tubercles.

But here’s the thing:

• Unless you’re an expert racing at max velocity, this won’t matter.
• The Silk’s stability actually lets you ride faster, because you can push harder without hesitation.
• Thanks to its thin, ultra-efficient design, the Silk is still one of the fastest surf foils in the world.

Why Don’t All Foils Have Tubercles?

Simple—they’re harder to design and manufacture.

• Outsourced production = lower quality control → Most brands can’t get tubercles right.
• AFS owns their own factory → They have the precision needed to make them work perfectly.

This is why AFS is the only brand making high-performance tubercle foils at this level.

Tubercles Have Proven Benefits In Research

This isn't just marketing—tubercles have been extensively studied in hydrodynamics & aerodynamics, with CFD simulations and real-world testing proving their ability to reduce flow separation, increase stability, and improve efficiency.

Extra Tech—More Than Just Hype

✔ Winglets – Reduce tip vortices (drag) and increase stability.
✔ Camber – More low-end lift + smoother turns.
✔ Anhedral – Boosts maneuverability.
✔ Sweep – Reduces turbulence & increases high-speed stability.

The Bottom Line

The Silk doesn’t just perform better—it makes foiling feel effortless. Whether you're hunting waves, linking swells, or pushing maneuvers, this is the foil that delivers on every front.

Are you ready to upgrade?