Kizer CK Critical Flipper Frame Lock Knife Blue Pivot (3.6" Stonewash) Ki4508A1

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MSRP: $290.00
Our Price: $203.00
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Item #BHQ-79959


  • Overall Length:8.64"
  • Blade Length:3.59"
  • Blade Thickness:0.16"
  • Blade Material:CPM-S35VN
  • Blade Style:Wharncliffe
  • Finish:Stonewash
  • Edge Type:Plain
  • Handle Length:5.05"
  • Handle Thickness:0.50"
  • Handle Material:Titanium
  • Color:Gray
  • Weight:6.27 oz.
  • User:Right Hand
  • Pocket Clip:Tip-Up
  • Knife Type:Manual
  • Opener:Flipper
  • Lock Type:Frame Lock
  • Brand:Kizer
  • Model:Critical
  • Model Number:Ki4508A1
  • Designer:Matthew Christensen
  • Country of Origin:China
  • Best Use:Everyday Carry
  • Product Type:Knife


The Christensen Knifeworks designed Critical folder is a bold collaboration with Kizer Cutlery. It offers an all-business wharncliffe blade made from CPM-S35VN stainless steel with a thick swedge and ample jimping. The ergonomic titanium frame lock handle is designed with a row of circular cutouts to ensure the Critical won't weigh you down. Blue anodized pivot collars, a blue anodized titanium backspacer, and a familiar titanium pocket clip have been added for a bit of custom flair.

  • CPM-S35VN blade steel provides outstanding strength, edge retention, and corrosion resistance.
  • Slim titanium handles offer a durable, high performance grip, that is comfortable in the hand or pocket.
  • Blade flipper for rapid blade deployment with a ceramic bearing pivot.

Customer Reviews

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Solid knife, annoying handle
Nick S.
This knife is another example of great Kizer quality at a fairly low price point.
It flips open easily, locks up solidly, is razor sharp out of the box and looks great. Kizer's packaging on their full titanium knives is on par with many higher end knives that are twice the price or more.

My only issue with the Critical is the extreme angle on the tail end of the backspacer. It looks good, but it stabs into your palm, making the knife uncomfortable to open unless you hold it at a weird angle (like a frisbee?). I have medium/large hands (about 7 1/2" from base of palm to tip of middle finger). The knife is comfortable to hold once open, but just not while opening.