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Spyderco Endura 4 Blue FRN SpyderEdge, Satin K390 - C10FSK390

Spyderco Endura 4 Blue FRN SpyderEdge, Satin K390 - C10FSK390

Spyderco

$142.80

Earn 143 REC points with this purchase!

(1 review) Write a Review

Out of stock

Spyderco Endura 4 

The Endura 4 with SpyderEdge serrations harnesses K390 steel's exceptional wear resistance for superior cutting performance. The distinctive blue FRN handles provide secure grip while keeping weight to just 3.3oz despite the substantial 3.80" blade. With full-flat grinding for efficient slicing and aggressive serrations that power through tough materials, this folder handles demanding tasks with ease. The reliable back lock and four-position clip ensure versatile carry options—serious cutting capability in a practical everyday package.

Explore Spyderco Knives

Overall Length:
8.78
Blade Length:
3.80
Blade Thickness:
0.118
Blade Style:
Plain
Blade Grind:
Flat, Serrated
Blade Steel:
K390
Blade Finish:
Satin
Handle Length:
4.98
Handle Material:
FRN
Weight:
3.3oz
Pocket Clip:
Ambi, 4 Position
Locking Mechanism:
Back Lock
Action:
Manual
Country of Origin:
Japan
Model #:
C10FSK390
OUT OF STOCK
Spyderco Endura 4, Blue FRN / Satin K390 - C10FPK390

Spyderco

Spyderco Endura 4, Blue FRN / Satin K390 - C10FPK390

$153.00

In 1990 Spyderco shook things up by introducing two knives, the Delica and Endura. First of their kind on the market, both folders opened up the knife market to lightweight performance, one-hand open...

OUT OF STOCK
Spyderco Delica 4 Blue FRN SpyderEdge, Satin K390 - C11FSK390

Spyderco

Spyderco Delica 4 Blue FRN SpyderEdge, Satin K390 - C11FSK390

$123.20

*DISCONTINUED* In 1990 Spyderco shook things up by introducing two knives, the Delica and Endura. First of their kind on the market, both folders opened up the knife market to lightweight...

OUT OF STOCK
Spyderco Endura 4 Wharncliffe, Blue FRN / Satin K390 - C10FPWK390

Spyderco

Spyderco Endura 4 Wharncliffe, Blue FRN / Satin K390 - C10FPWK390

$142.80

Endura 4 Wharncliffe The Endura 4 Wharncliffe combines Spyderco's proven design with a straight-edged blade that excels at both precision cuts and powerful slicing tasks. This blue-handled version...

1 Review

  • 5
    Built for Real Use

    Posted by Petr Dvořáček on 24th May 2025

    I’ve been carrying the Spyderco Endura 4 K390 for several days now, and it's quickly become a favorite for hard-use tasks. The knife is lightweight thanks to the FRN handle, yet feels durable and secure in hand. The bi-directional grip texture provides excellent control, even in wet conditions. What really sets it apart is the K390 tool steel blade. Straight out of the box, it’s razor-sharp — and it stays that way. I’ve used it on cardboard, rope, zip ties, and food prep without needing to touch up the edge. It cuts effortlessly thanks to the full flat grind. The trade-off is corrosion sensitivity: light maintenance (a wipe and oil at the end of the day) is a must, but worth it for the performance. Lock-up with the back lock is solid and secure, with zero blade play. It opens a bit stiff at first but breaks in nicely. The slim profile makes it easy to carry, and the four-position pocket clip gives great flexibility. In short: if you want a reliable, high-performance folder with incredible edge retention and no-nonsense design, the Endura 4 K390 delivers. It’s not flashy — it’s functional, efficient, and ready for real work.

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