Columbia River CRKT 4040 Kinematic Provoke Folding Karambit 2.41" D2 Black Plain Blade, Black Aluminum Handles


Part #: CR4040 | Columbia River (CRKT)


CR4040: Joe Caswell 4040 Provoke


Serve. Protect. The Provoke knife draws on ancient karambit design but it’s hiding a futuristic secret. The first knife ever to feature Kinematic technology, it stays neatly tucked away in transit and comes to life when there’s trouble afoot. Optional Boltaron sheath and clip set available.

CRKT thinks of Designer Joe Caswell as somewhat of a mad scientist. When they got an eyeful of the sketches that were to become the Provoke — designed in Newbury Park, California — they knew he was destined to become one of the most innovative designers the knife world has ever seen. Modeled after a traditional karambit, the black titanium nitride hawkbill-style blade is forged of a premium D2 steel for high durability and excellent edge retention. 

The opening mechanism is pulling the folder into the future whether it’s ready or not. Thumb pressure on the upper crossbar sets the chain reaction in motion, causing the blade to lunge to action while you’ve got a firm grasp on the handle. It’s crafted of aircraft-grade 6061 aluminum for supreme toughness. In true Joe fashion, the pocket clip is also a world’s first—sitting almost completely flush with the handle and likewise activated with light thumb pressure.

The Provoke comes up strong when it’s called in for duty.

How Kinematic Works

Nudge the upper crossbar with your thumb—while the rest of your fingers firmly grasp the handle—and the blade lunges to life and locks into place. Shift the discrete lever at the base of the finger loop and the blade retreats into its closed position.


  • Kinematic innovation deploys the blade quickly for first responders
  • D2 blade steel holds an edge well and has a titanium nitride finish for corrosion resistance
  • 6061 aircraft grade aluminum handles are strong and lightweight


  • Blade Length: 2.41"
  • Closed Length: 4.96"
  • Overall Length:7.25"
  • Blade Material: D2 Tool Steel
  • Blade Thickness: 0.209"
  • Blade Style: Hawkbill
  • Blade Finish: Black Titanium Nitride
  • Handle Material: Aluminum
  • Locking Mechanism: Kinematic
  • Pocket Clip: Tip-Up, Right Carry
  • Weight: 6.1 oz.
  • Optional Boltaron Sheath Available (sold separately)
  • Designer: Joe Caswell
  • Made in Taiwan

Related Categories

Columbia River (CRKT), CRKT Provoke Series, D2 Blade Steel, Aluminum Handle Material, Folding Knives, Folding Knives Other Lock Types

Pocket Clip
D2 Tool Steel
Aluminum Handles
Columbia River CRKT 4040 Kinematic Provoke Folding Karambit 2.41" D2 Black Plain Blade, Black Aluminum Handlesrated 4.444 stars out of 5 (9 reviews)
4.4 out of 5 stars
5 star
4 star
3 star
2 star
1 star
Columbia River CRKT 4040 Kinematic Provoke Folding Karambit 2.41" D2 Black Plain Blade, Black Aluminum Handles
rated 5 stars out of 5
Jan 19, 2021
Pros: Pocket Clip, Overall Quality, Handle Feel, Weight, Blade Sharpness, Ease of Opening, Lock Type
Cons: None
Great folding karambit
This is a self defense knife. The most important properties of this knife are ease of deployment, sharpness of the blade, reliability, and feel of the knife in your hand. I think all that checks out great in this knife. I find it much better than other folding karambits. It opens as quickly as an assist opener. That surpasses all manually opening karambits. There are some models that open when you pull them from the pocket, which can be arguably faster options, however with this knife you are always in control. You can pull it closed and open fast when you need it.It is difficult to be objective about sharpness without special equipment, but it feels like it is razor sharp out of the box.The kinematic mechanism is unusual, but it is very simple (and very cool!). I have this knife for less than a month and opened that maybe 500 times - so far so good. I don't expect it to fail unless damaged.I have a medium size palm and it feels just perfect. I would say if your palm is not wider than 4 inches you should be fine.Something less positive to note: This is a right handed knife. You can open it with left hand, no problem, but carrying it in the left side is awkward and impractical. The pocket clip is made for the right side. I am ambidextrous and I really hope CRKT considers building a left handed version of this knife. Sheath doesn't come with the knife. Looks like you can order it separately.
Columbia River CRKT 4040 Kinematic Provoke Folding Karambit 2.41" D2 Black Plain Blade, Black Aluminum Handles
rated 4 stars out of 5
Southeast Asia
Sep 25, 2019
Pros: Blade Material, Overall Quality, Handle Feel, Weight, Ease of Opening, Blade Sharpness
Cons: None
Solid, well made, well designed.
I intend to use this kerambit mainly for self-defense/hiking/camping. This is a very solid, well made and well designed product. The overall quality of this kerambit is very, very good. It came out razor sharp out of the box.The size of the kerambit is a bit large for me, but it does not impede my movement in any way. Good and firm grip. The overall construction is very solid. The opening mechanism needed a bit of "warming up", but after a few times opening and closing it, the kerambit worked smoothly.Personal opinion: The blade could be made to curve in a bit more to give maximum hook//grip/damage to the intended object/subject.Overall, this is a well made, well designed kerambit that has a lot of potential.
Columbia River CRKT 4040 Kinematic Provoke Folding Karambit 2.41" D2 Black Plain Blade, Black Aluminum Handles
rated 4 stars out of 5
Sep 13, 2019
Pros: Ease of Opening, Handle Feel, Overall Quality
Cons: Pocket Clip, None
Fun Factor
I was looking at it for awhile and finally decided to go for it. To be quite honest, I purchased it mostly for the fun factor. It's an awesome karambit to have fun with opening and closing it (mostly opening). Several reviews claimed it was hard to open and/or close. Mine was flawless. It's smooth to open and easy to close. The only so so part is the clip. Great idea of the clip sitting flush but it's hard to clip onto jeans or other thicker materials.As for the $199 price tag? Not so much but then again, it's the first of the kind.....
Read all 9 Reviews »