KB Knives Zephyr Linerlock Folding Knife Flamed TI W/ Carbon Fiber Inlay BB M390 KUB431B

The KB Knives Zephyr Linerlock Folding Knife in flamed titanium with carbon fiber inlay delivers a strong mix of precision engineering and bold design. Designed by K.C. Spiron, this folder brings together high-end materials and a clean, purposeful build that’s made for everyday carry and hard use alike. It’s a knife that stands out through detail and performance without sacrificing reliability.

The 3.70-inch drop point blade is crafted from premium M390 steel, known for its exceptional edge retention, corrosion resistance, and long-term durability. Treated with a vacuum and cryogenic heat process and hardened to HRC 60–62, the blade is built to hold its edge through extended use. The flat grind and plain edge provide versatility across a wide range of cutting tasks, from slicing to controlled detail work. Finished with a silver bead blast, the blade maintains a clean, low-glare appearance that performs just as well as it looks.

The handle is built from titanium and finished with a flame anodized treatment, giving each knife a unique pattern with shifting tones that catch the light without overpowering the design. Micro milling adds both texture and grip, enhancing control in hand. The carbon fiber inlay, set in a wave pattern, adds contrast and depth, bringing a modern edge to the overall look. At 4.65 inches long and 0.47 inches thick, the handle offers a comfortable, balanced feel while remaining slim enough for easy carry.

The linerlock mechanism provides solid, dependable lockup, while the caged ceramic ball bearing system ensures smooth, consistent blade deployment. Titanium hardware is used throughout, including the backspacer, clip, pivot cap, screws, and thumb stud, with flame anodized and sandblasted finishes that create a cohesive, high-end appearance. The tip-up pocket clip supports both left- and right-hand carry for added versatility.

Weighing 4.38 ounces and measuring 8.35 inches overall, the Zephyr strikes a strong balance between durability and everyday practicality. It’s built for those who expect premium materials, smooth action, and a design that stands apart without compromising function.

A striking blend of flame anodized titanium and modern carbon fiber, available at SMKW.