Columbia River CRKT 5400 Flavio Ikoma XOC (Shock) Flipper Knife 4.258" CTS-XHP Satin Plain Blade, Carbon Fiber Handles with Titanium Inlays - Deadbolt Lock


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Part #: CR5400 | Columbia River (CRKT)
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CR5400: 5400 Flavio Ikoma XOC (Shock) Folding Knife


Overkill? Most definitely.

For designer Flavio Ikoma, bigger is better. He brings this conviction to life in the colossally overbuilt, limited edition XOC (pronounced "shock") folding knife. It's among the first in the world to house Deadbolt, the mechanism that proves awesome strength doesn’t have to come at the compromise of simplicity and usability.

For years, Flavio Ikoma of Presidente Prudente, Brazil toiled over the mechanism that was to become Deadbolt. Finally, it's perfected: steel bolts interlock with the CTS-XHP carpenter steel blade when it's deployed to yield outrageous strength. A prominent button sits at the pivot point on the burly titanium handle for simple disengagement. 

As a finishing detail, Flavio added a discreet Torx screw in the handle for deployment customization. Modify the blade detent for an easier or more powerful flip that's all yours.

The overbuilt XOC is a showpiece with powerful capabilities.

How Deadbolt Works

Steel bolts interlock with the blade when it’s deployed to yield outrageous strength. A prominent button sits at the pivot point for simple, intuitive disengagement without fingers crossing the path of the blade. It's ingenious, safe, and reliable, what more could you ask for?

About Flavio Ikoma

Some kids dream of being a ballplayer. Flavio wanted to be a knifemaker. In his adolescence, he worked on knives of the Japanese sword variety in his father's shop. He has gone on to learn metallurgy, to work with Ken Onion, and to become a force for innovation. Flavio brought to market the revolutionary IKBS ball bearing pivot system (with Rick Lala), and evolved the classic locking liner with the ILS safety, exclusively available from CRKT in the No Time Off knives.


  • Blade Length: 4.258" (108.15 mm)
  • Closed Length: 6.25" (158.75 mm)
  • Overall Length: 10.375" (263.53 mm)
  • Blade Thickness: 0.181" (4.60 mm)
  • Blade Material: CTS-XHP Stainless Steel
  • Blade Hardness: 60-62HRC
  • Blade Style: Recurve Drop Point
  • Blade Grind: Flat
  • Blade Finish: Satin
  • Handle Thickness: 0.710" (18.03 mm)
  • Handle Material: Carbon Fiber with 6Al4V Titanium Inlays
  • Locking Mechanism: Deadbolt Lock
  • Pivot Assembly: IKBS Bearings
  • Pocket Clip: Tip-Up, Right Carry
  • Includes Leather Knife Pouch
  • Weight: 11.0 oz. (312 g)
  • Designer: Flavio Ikoma
  • Made in Taiwan
Pocket Clip
Pocket Clip Includes a pocket clip for easy accessibility and a more secure carry.
Carbon Fiber Handles
Carbon Fiber Handles Very strong and lightweight material. Provides an upscale and modern feel.
Leather Sheath
Leather Sheath Leather is known for its durability and traditional appeal. When compared to Kydex it is preferred for its silence when bumped against other objects, as well as blade retention.
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