Reviews and Ratings for Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handles - C10FPK390

Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handlesrated 5 stars out of 5 (4 reviews)
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Spyderco Endura 4 Lightweight Folding Knife 3.8 inch K390 Satin Plain Blade, Blue FRN Handles

 

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Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handles
rated 5 stars out of 5
Jwhiskers
,Abilene, TX
May 08, 2024
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Pocket Clip, Weight
Cons: None

Spydie K390 and Endura

The Endura has been my favorite EDC knife since they came out, particularly the FRN. Even with needing to deburr the hole... just the ergonomics, ease of deployment and re-pocketing etc... have NOT been superseded. Not to mention KCI service! But Spyderco's K390!!! I've been into knives and steels for 56 years. This treatment really does blow my mind. I'd buy multiple more right now, had I money! I LITERALLY just cut up my used up MerrilL boot with it and it still shredded paper like it was unaffected. And that with the FACTORY edge. penetrated/sliced shoe layers and Vibram soul with ease. Blade looks untouched. THEN cut paper like a razor. Looking for more Spydies and fixed blades in the future. [Feel free to share this review with Golden...] Thanks and Carry on KCI!
Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handles
rated 5 stars out of 5
Chris
Abq, NM
Jan 31, 2026
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Weight
Cons: None

Cant go wrong here

Spyderco quality, what can I say! The FRN handles are grippy and light but still well balanced with the meat of the blade surprisingly. I like that this knife has some heft. Lockback action is so smooth and tight, no play, blade stays centered throughout. The quality of this knife is definitely present–this thing is SHARP and stays sharp (K390 is magic). Its a solid knife for everyday carry, but not necessarily one you can beat up and neglect. Pocket clip can be kinda awkward in the palm but thats just personal, this knife is otherwise ergonomic and straightforward.
Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handles
rated 5 stars out of 5
Stephen
Morrisville, Nc
Dec 02, 2020
Pros: Weight, Pocket Clip, Blade Material, Overall Quality, Blade Sharpness
Cons: None

Excellent!

While this is still a new knife, initial impressions are excellent. I’m comparing it to the Endura, in ZDP 189. A side-by-side test at the cutting board reveals that the Endura K390 is slightly more sclicey than my ZDP 189. To be fair, the ZDP 189 is a few years old, so I am not comparing new-factory-edge to new-factory-edge. Still, the K390 seems more slippery than the ZDP 189. Craftsmanship is top-of-the-line, lock up is perfect, blade is centered in the handle while closed. I will confess, the Endura ZDP 189 is my favorite pocket knife, and my daily carry. I go nowhere without it and my Endura sees daily use at the cutting board, as well. In my opinion, for daily carry, this knife is a solid choice! Looking forward to spending more time with the excellent K390 steel.
Spyderco Endura 4 Lightweight Folding Knife 3.8" K390 Satin Plain Blade, Blue FRN Handles
rated 5 stars out of 5
Jsnaggle
Wisconsin
Jan 27, 2026
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality, Pocket Clip, Weight
Cons: None

Classic

I've been looking for a modern folder in carbon steel for quite some time. Always seemed to strike out or exceed my price range. Didn't stumble upon the endura K390 until I recently lost my VG10 endura and started the hunt for a replacement. Haven't put it to the test much other than cutting up some boxes and fruit. It definitely patinas quickly and has a beautiful shimmer to the blade. This is as close to perfect for me being carbon steel Spyderco with a great reputation for cutting. Almost removed a star for the uneven grind, but just gives me an excuse to re-profile. Would have expected a better grind on $150 knife. Overall thought, very satisfied. Would like to see more color options in K390.
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