Prometheus Design Werx

SPD Invictus-SP

A top rated EDC knife, the PDW Invictus-SP is a full billet titanium framelock folder built to the same design patent (US D752,411 S) as the original Invictus, refined into a slimmer carry profile for daily use. The blade is CPM MagnaCut — the current benchmark for balanced edge retention, toughness, and corrosion resistance in premium knife steel. The pivot runs on ceramic bearings in brass cages, the lock bar stabilizer prevents over-travel, and the dual thumbstuds carry GITD cabochon inlays. Precision made for wilderness and urban EDC. No compromises on material or execution. We build tools for adventure and exploration.
$ 369.00
  • Overview
    Precision made, with fine jimping throughout, dive watch grade glow-in-the-dark thumbstud cabochons, and the signature, purpose driven, industrial design direction that is distinctly from the hand and mind of our Chief Designer and Company Founder.


  • Reviews

    Customer Reviews

    Based on 15 reviews
    93%
    (14)
    0%
    (0)
    7%
    (1)
    0%
    (0)
    0%
    (0)
    92.3
    100.0
    M
    Mark Mayer
    Excellent

    Really like this one a lot. Very well done with perfect tolerance’s. Also have the push button pivot with terravantium model. I prefer this frame lock in magnacut. They are both excellent daily carry knives though.

    L
    Lenny
    Favorite Knife

    I absolutely LOVE these SPD Invictus SP knives! They are my favorites knives and I have owned hundreds of knives. I own 4 of these. I highly reccommend this knife.

    We are stoked to hear that the Invictus is one of your favs! Thank you and rock on!

    A
    Alex

    Outstanding knife made from high end material. It's a great EDC size and the spear point can be used for a lot of cutting uses. Most definitely is pricey but its so nice I don't feel about that price tag 🙂
    I like to flick my knives open but can't do it with this one. Detent is a bit too strong at this point. Thumbstud are very easy to use.

    C
    Cesar Melero
    Well made knife, but difficult to open one-handed

    Absolutely love the look and feel of this knife.

    It is difficult to open with one hand. Based on the location of the thumb stud, combined with a very strong detent, I have to use a second hand to open it.

    I’ve owned many knives at different price points. I am very familiar with knives.

    I would welcome any feedback that would help
    In my enjoyment of this knife.

    S
    Sean
    Functional art

    Cuts well, feels good, looks great.

    123
  • Specifications

    Specifications:

    Materials:
    • CPM MagnaCut
    • 6AL-4V Titanium
    • Ceramic
    Approx. Dimensions:
    • OAL: 8.125" / 206mm
    • Blade Length: 3.50" / 89mm
    • Blade Thickness: 0.118" / 3mm
    • Handle Thickness: 0.416" = 10.56mm
    Approx. Weight:
    • 3.4oz
    Features:
    • Premium CPM MagnaCut Blade Steel
    • Chamfered Titanium Billet Handles
    • Lock Bar Stabilizer
    • Dual Thumbstuds with Premium GITD Inlays
    • Milled Pockets in Titanium Handle Interior for Weight Reduction
    • Bronze Cages, and Ceramic Bearings
    • Ceramic Ball Detent
    • Full Back Spacer with Jimping
    • Lanyard Pin for Type I Cordage
    • Low-Ride Billet Pocket Clip
    • Fine Matte Bead Peened Industrial Finish
    • US Design Patent: US D752,411 S
    Marks:
    • Laser Etched SPD Kraken Trident Mark
    • MagnaCut
  • FAQ

    FAQ

    What blade steel is in the PDW Invictus-SP?

    CPM MagnaCut — a powder metallurgy stainless steel developed by Larrin Thomas and Crucible Industries offering a balance of edge retention, toughness, and corrosion resistance that outperforms most prior premium knife steels. It is not a stainless alloy in the traditional sense; the CPM process produces a finer, more uniform carbide structure than conventional steelmaking.

    What is the difference between the Invictus and the Invictus-SP?

    The Invictus-SP (Slimmer Profile) features a reduced handle thickness — 0.416 inches versus the original Invictus — for a lower-profile pocket carry. Both share the same US Design Patent (D752,411 S), CPM MagnaCut blade, full billet 6AL-4V titanium construction, ceramic bearings, and lock bar stabilizer. The SP is optimized for urban EDC carry comfort without compromising field capability.

    Is the PDW Invictus-SP covered by a design patent?

    Yes. The Invictus design is protected under US Design Patent D752,411 S, awarded to PDW's Chief Designer and Company Founder. It is the only titanium framelock EDC folder in this category carrying a US design patent on its form.

    What does the lock bar stabilizer do?

    A lock bar stabilizer (LBS) is a small insert fitted to the framelock that prevents the titanium lock bar from traveling past its optimal engagement point. Without it, repeated use can cause the lock bar to migrate open, reducing the percentage of blade tang it contacts and compromising lockup over time. The LBS maintains consistent lock engagement for the life of the knife.

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