STOP. Some things only become clear at first sight. AERO FX is one of them.

INHALE. The lines disappearing into the air. A profile that the wind passes through without encountering resistance. Then you grip the handle and understand that that lightness isn't a lack. It's rigor. It's everything that has been purposefully removed.

LOOK. The dot of color on the pin is the visible signature of a knife that has eliminated all the superfluous. The point where the tension of the entire project is concentrated. You understand it even before you realize why you're looking at it.

THINK. For thirty years, Extrema Ratio has been making knives for those who work where tools cannot afford to fail. Then one day it asked itself the question: what would a knife be like for an enthusiast of EDC and beauty, without compromise? The answer is the shape of a profile that the wind passes through without resistance. And a 4.8 mm blade thickness that tells another story, that of a tool that never forgets where it comes from.

IMAGINE. Antoine de Saint-Exupéry said that perfection isn't achieved when there's nothing left to add. It's achieved when there's nothing left to take away. AERO FX is the answer to that question, with an 80mm blade and 191mm overall length that leave no room for doubt.

FEEL IT. The crisp, clean lines of the skeletonized full-tang grip blend under your fingertips into a solid, fluid, and continuous geometry, devoid of any unnecessary thickness. At the heart of this monochromatic balance, the point of color on the pivot focuses the visual tension of the design, acting as a magnetic and discreet signature. It's a tool designed to integrate with the personal aesthetic of those who appreciate the substance of matter.

Built to last. Easy to maintain.
Anticorodal aluminum handle. Nitrogen steel blade with MIL-C-13924 burnished finish: superior corrosion resistance, edge retention beyond expectations for daily use, easy sharpening without requiring specialized tools. Minimal maintenance. Because a tool that demands too much ultimately ends up in the drawer.

One thing that changes everything.
The AERO FX cheek pads are designed to be swapped out. With a few simple steps, anyone can change the color whenever you want. Today, Black/Lime. Tomorrow, Blue/Orange. The day after tomorrow, the version you invented.

Port system.
The AERO FX sheath is a unique design. Two pre-shaped Kydex pieces: the first has an ultra-slim profile, designed to blend in and disappear under any clothing. The second, an additional Kydex interface, widens the attachment footprint to ensure stability with accessories like the belt clip. Two geometries. One solution.

It can be secured using the two included Malice clips, or configured freely by threading paracord through the perimeter eyelets. Both are included. Because versatility shouldn't be optional.

A flexible solution that lets the beauty of the instrument remain a purely personal secret

Brand: Extrema Ratio
Blade finish: MIL-C-13924 bluing
Blade type: Tanto smooth
Blade material: Nitrogen steel
HRC: -
Handle material: Anticorodal anodized aluminum
Total length: 191mm
Blade length: 80mm
Blade thickness: 4.8mm
Weight 117g