D4-440A Stainless Blade

$69.95 $72.90

Buy as a Blade ONLY 

*NO Screws Included when purchasing Blade ONLY

  • Toughest Blade Available in shop 
  • Throwing Capable 
  • Ultimate Performance 

Compatible with:

UPK-D1, D2, and D4

Blade Material Comparison (Tensile Strength)

  • 440A Stainless Steel 220+ ksi 
  • Black 7075-T6 Aluminum 70 ksi
  • Red 50% Glass-filled Nylon 9 ksi



  • Requires Torx T20 Driver to remove screws (Not Included)
  • There are 2 stainless springs located under/inside the Button, maintain pressure on button when loosening the Lock screw,  recommend  opening slowly.
  • Upgrade requires the use of Loctite 243 in all 3 instances of hardware screws and is included

What's Included

Blade Only (existing hardware REQUIRED)

  • 440A Stainless Steel Blade