Thanks to the generosity of the Onion/Kershaw Community, I find myself in the enviable position of having two Spec Bumps (and a darn nice T-shirt, too). One is of the original CPM 154 variety, and the other is the new and improved S30V version. I thought perhaps I would share some observations with all of you:
The knives in image one, from top to bottom, are my beloved Leek (still my all time favorite knife), Improved Spec Bump, and Original Spec Bump. You will note in image one that the two knives are proportionally identical. Infact, there are only three significant differences:
That's it. Hope you can all get something out of this. I think there are some out there that would prefer the original over the improved version, even with the tantalizing S30V option. I, for one, am slightly in favor of the original because of the thumb stud issue. Either one is a winner. The Spec Bump is one crackerjack knife.
The knives in image one, from top to bottom, are my beloved Leek (still my all time favorite knife), Improved Spec Bump, and Original Spec Bump. You will note in image one that the two knives are proportionally identical. Infact, there are only three significant differences:
- You will note in image two that the texturing on the handle of the improved bump is much more aggressive than the original. It drags a bit more going in and out of the pocket, but offers a much better gripping surface. The original pattern is very asthetically pleasing to me, and I prefer the looks, but the radial pattern of the improved version is more functional.
- The stud is also quite different on the "improved" version [image three]. I much prefer the original stud, as there is more stud to push with my thumb for closing (I always use the flipper to open). The graduated, cone shaped stud on the improved version makes it very difficult to close one handed. My thumb has the motion down from using the original for several weeks, and I just can't comfortably close the improved one with one hand. Other than that, the two studs are identical in operation. (The picture is not clear, but the stud on the improved version has the same hex shape at its base)
- The final, and perhaps most significant difference is the steel. As is clearly illustrated in image three, the improved version has S30V steel. Both steels have their merits, but S30V, IMO, has an edge on the CPM 154. I'm wondering if there was some issue with the (almost proprietary) CPM 154. I have not had any trouble with it., and find it to be a great steel. It's as hard to sharpen as 154CM, but that's to be expected.
That's it. Hope you can all get something out of this. I think there are some out there that would prefer the original over the improved version, even with the tantalizing S30V option. I, for one, am slightly in favor of the original because of the thumb stud issue. Either one is a winner. The Spec Bump is one crackerjack knife.


