Kizer Isham Theta Frame Lock Knife Titanium (3.1" Stonewash) Ki4514


  • CPM-S35VN wharncliffe style blade provides a razor sharp edge that resists corrosion and wear.
  • Hidden blade flipper tab offers rapid deployment and an ultra clean design.
  • A slim titanium pocket clip blends effortlessly into the design while providing a secure carry option.


The Kizer Theta represents the first design from Elijah Isham's Simple Series. Dramatic clean lines and a uniquely modern aesthetic will make this the prize jewel of any knife collection. The utilitarian design showcases a titanium frame lock handle and a sleek wharncliffe style blade with a hidden flipper tab. Pick up a straightforward EDC folder that does not scrimp on style with the Kizer Theta.

Item #BHQ-79735
MSRP: $258.00
Our Sale Price: $159.99!
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  • Overall Length: 7.375"
  • Blade Length: 3.125"
  • Blade Width: 1.13"
  • Blade Thickness: 0.14"
  • Blade Material: CPM S35VN
  • Blade Style: Wharncliffe
  • Blade Grind: Flat
  • Finish: Stonewash
  • Edge Type: Plain
  • Handle Length: 4.36"
  • Handle Width: 1.25"
  • Handle Thickness: 0.50"
  • Handle Material: Titanium
  • Color: Gray
  • Weight: 3.91 oz.
  • User: Right Hand
  • Pocket Clip: Tip-Up
  • Knife Type: Manual
  • Opener: Flipper
  • Lock Type: Frame Lock
  • Brand: Kizer
  • Model: Theta
  • Model Number: Ki4514
  • Designer: Elijah Isham
  • Country of Origin: China
  • Best Use: Everyday Carry
  • Product Type: Knife

Customer Reviews

Kizer knocked it out of the park with this one!
Cameron D. on Dec 24, 2018

Kizer did an amazing job with the Theta. The knife is well designed simple and elegant. The S35 steel is razor sharp. I didn't experience a weak detent like other people the flipper tab and finger hole opens the knife with authority. I'm very impressed with the knife at $140 it's worth every penny. Get this knife you won't regret it.

Use it!!!!
Craig C. on Nov 11, 2018

Agreed with other reviews of weak detent at first but after about a week of handling the Theta it’s perfect. Zero malfunction from flipper tab and middle finger flick was always smooth.

excellent design and form factor
Michael C. on Aug 1, 2018

for the amount of space that this knife takes up in the pocket it packs a good amount of cutting edge. fit and finish are absolutley excellent which I've come to know as par for the course with kizer. I do wish that there was just a little more finger room as my pinky almost hangs off the end of the handle although I do have rather large hands and this isnt a large sized knife to begin with. blade I'd perfectly centered but the detent is just a tad weak making using the flipper tab a bit awkward but it spydie flicks like a champ!! overall it's a killer knife and design imo

Almost there Kizer
Chris H. on Aug 21, 2018

The good- The knife is comfortable, lightweight and ergonomic. The bad- the detent is VERY weak. Flipper tab is difficult to use for deployment. Middle finger flick is optimal for this model! Also, it was off center and very gritty out of the box. It had crazy strong thread lock in the pivot. After overcoming that I took it apart, cleaned, re-lubed and reassembled. Much better now. Blade is centered and “drop-shut” smooth.

Nice design by Isham
Mike J. on Jul 22, 2018

The knife is almost a home run. My only complaint is the rather weak detent. It flips poorly unless wrist action is added but the upside is the nice blade hole for underside middle finger flick. You can use a thumb to open very easily as well which is due to the weak detent. Had this prioritized the detent for flipping, it’d be five stars.

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