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KastKing

KastKing Speed Demon Pro Lithium-ion Electric Fillet Knife - Cordless Rechargeable Fishing Knife with 4 Blades, High Torque Motor with Extended Battery Life, Ergonomic Handle and Custom Carry Case

  • Based on 287 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, May 25
Order within 10 hours and 24 minutes
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Style: B: Guide Pack (4 Blades +2 Battery Packs)


Features

  • Balanced Design & TPR Handle: Enjoy fatigue-free filleting with the Speed Demon Pro Li's perfectly balanced, ergonomic design. Electric fish fillet knife with thinner, soft TPR handle ensures a firm, non-slip grip for precise control and safety
  • High Torque Motor: Equipped with a potent high-speed, high-torque motor that delivers efficient performance for quick, smooth, and effortless filleting. Regardless of the fish size or species, this electric fillet knife is your ultimate fishing tool
  • Extended Battery Life & Indicator: Powered by a 12.6v lithium-ion battery that offers up to an impressive 1 hour and 40 minutes of continuous runtime on a single charge. The Guide Pack includes two batteries for uninterrupted use
  • Superior Blade Quality & Selection: Each pack comes with corrosion-resistant 420 stainless steel blades, featuring a durable titanium Vapor Deposition coating. The Guide Pack includes a 7" and 9" Finesse blade, 9" Talon blade, and a 12" Talon blade
  • Custom Carry Case: The Guide Pack includes a custom-molded, slim EVA carry case for convenient storage and transport of your fillet knife, blades, and accessories. The slim style case fits easily in boat compartments, luggage, packs and more

Recommended Uses For Product: Fishing, Outdoors


Brand: KastKing


Model Name: KastKing Speed Demon Pro Lithium-ion Electric Fillet Knife


Special Feature: Extended battery life, Lithium-Ion battery with power level display and overcharge protection, Charger with full charge indicator, High speed, high torque motor See more


Age Range (Description): Adult


Included Components: Case, Charger, 2 Lithium-ion Batteries, Knife & 4 Blades


Handle Material: Thermoplastic Elastomers (TPE)


Color: Orange


Blade Material: 420 Stainless Steel with Titanium Plating


Style: B Guide Pack (4 Blades +2 Battery Packs)


Recommended Uses For Product: Fishing, Outdoors


Brand Name: KastKing


Model Name: KastKing Speed Demon Pro Lithium-ion Electric Fillet Knife


Age Range Description: Adult


Included Components: Case, Charger, 2 Lithium-ion Batteries, Knife & 4 Blades


Model Number: Speed Demon Pro


Customer Package Type: Frustration-Free Packaging


Set Name: Guide Pack


Manufacturer: KastKing


Handle Material: Thermoplastic Elastomers (TPE)


Blade Material: 420 Stainless Steel with Titanium Plating


Product Care Instructions: Hand Wash Only


Special Features: Extended battery life, Lithium-Ion battery with power level display and overcharge protection, Charger with full charge indicator, High speed, high torque motor


Power Source: Battery Powered


Hand Orientation: Ambidextrous


Blade Shape: Fillet


Blade Edge: 420 Stainless Steel with Titanium Plating


Reusability: Rechargeable


Orientation: vertical


Blade Type: Fillet


Is Product Cordless: Yes


Color: Orange


Style: B Guide Pack (4 Blades +2 Battery Packs)


Theme: Fishing


Item Shape: elongated


Item Weight: 1.85 Kilograms


Item Length: 16.5 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • It's cordless!
Style: B: Guide Pack (4 Blades +2 Battery Packs)
Review Image by jdmudcat
Review Image by jdmudcat
Review Image by jdmudcat
Review Image by jdmudcat
Review Image by jdmudcat
This is my first battery powered knife and I am not disappointed. Most surprising was the over all quality of the components. The carry case is very durable and keeps all the parts neatly packed away. It appears to be made of a canvas type of material and the inside is a rubbery type of foam. The 4 sets of blades pack away nicely in the case and are very sharp. They are also corrosion resistant which is a huge plus. The blades lock solid inside the the handle and there is also a safety lock near the trigger. The lock is easy to engage and very functional however, even with the trigger lock I recommend removing the battery when inserting and removing the blades. This would be for any electric knife. The 2 Lithium-Ion batteries have a built in power level display and mine arrived almost fully charged. The batteries appear to be of good quality and lock solidly into the handle. With the batteries removed, the charger easily connects directly into the battery. I really like that the charger has a LED indicator to let you know when the battery is charged. It is red when charging and turns green when fully charged. The handle assembly is more solid than I expected. It is very well balanced and fits nicely in my hand. I can feel the torque when the trigger is pressed and is very powerful. Over all it just feels comfortable to use. I have used corded knifes for years and this one is sooo much better. I am very happy with my purchase and can not go back to back to cords. If any thing were to happen to this knife I would have to get another one. ... show more
Reviewed in the United States on October 7, 2023 by jdmudcat
    • Blades Won’t Cut
Style: B: Guide Pack (4 Blades +2 Battery Packs)
Review Image by Steelie Don
Review Image by Steelie Don
Review Image by Steelie Don
Overall this is a good electric knife set. The motor is quiet and strong. The 2 battery packs seem to hold a charge and recharge nicely. I love the carry/storage case. Very well made. The set comes with 4 sets of blades. Bluegill to salmon you should be able to fillet them all with this setup. Unfortunately my set had 2 sets that will not cut well. One is plain dull, so much so that excessive force is needed to even break a fish’s skin and scales. It will not separate fillets from skin. The worst offender is the 7” finesse blade. Didn’t want to cut and because of excessive blade tolerance filled up with fish matter and would gum up and bog down. I contacted Kastking customer service and they offered to help with this problem. They took care of me by offering me a refund or a gift card to their website. I chose the card and got a smaller knife set to replace the blades. Of course I had to spend more money on other things because of a shopping weakness I have but I am happy with the end result of my interaction with CS. ... show more
Reviewed in the United States on February 14, 2025 by Steelie Don
    • Nice little knife
Style: B: Guide Pack (4 Blades +2 Battery Packs)
Nice knife with a decent sheath.
Reviewed in the United States on March 27, 2026 by brad murray
    • Questionable quality
Style: B: Guide Pack (4 Blades +2 Battery Packs)
This company definitely has a problem with their quality control Dept. Received knife with a defective/DEAD battery. Looking at reviews and this seems to be an ongoing problem. Takes days to resolve because customer support is in CHINA. They dont answer you until 3ish in the morning. Anyway, they are sending another battery. ... show more
Reviewed in the United States on December 27, 2025 by UJ
    • Amzing fillet knife!!!!
Style: B: Guide Pack (4 Blades +2 Battery Packs)
As an avid angler with a penchant for detail in filleting, I recently invested in the Kastking electric fillet knife. This product has exceeded my expectations, providing a seamless filleting experience that combines precision, power, and convenience. The standout feature of this electric fillet knife is its high torque motor, which effortlessly powers through even the toughest fish scales and bones. The blades are sharp and durable, ensuring a clean and precise cut every time. The inclusion of four different blade options is a thoughtful touch, catering to a variety of filleting needs, from delicate fish to more robust catches. The extended battery life of this knife is a game-changer for anglers who often find themselves filleting multiple fish in a single session. With a full charge, I was able to fillet an entire day's catch without any noticeable loss of power. The cordless design adds to the convenience, allowing for unrestricted movement and eliminating the hassle of dealing with tangled cords. Ergonomics play a crucial role in the usability of any tool, and this fillet knife excels in that department. The ergonomic handle provides a comfortable grip, reducing hand fatigue during prolonged use. The well-balanced design ensures that the knife is easy to control, enhancing the overall filleting experience. The handle also features a non-slip surface, adding an extra layer of safety when working with slippery fish. The custom carry case that comes with the knife is a thoughtful addition, keeping the blades and the entire unit organized and protected during storage and transportation. It's a durable case that adds to the overall value of the product. While the Kastking electric fillet knife is an investment, its performance and durability make it well worth the price. Whether you're a professional angler or a casual fisherman, this cordless, rechargeable fillet knife is a must-have tool for achieving precision filleting with ease. I highly recommend it to anyone looking to elevate their filleting game. ... show more
Reviewed in the United States on November 11, 2023 by Jr
    • Very nice fillet knife
Style: B: Guide Pack (4 Blades +2 Battery Packs)
I fillet hundreds of crappie in a season. Having a good cordless, Electric knife is a must. Knife feels very well made. The rubber coating keeps a sure grip even when wet/slimy. Easy to wipe off and keep clean afterwards. Has great battery life. Blades are very sharp and the finesse blades are perfect for crappie/gills. The carrying case is very nice. Slim profile compared to other knives I've owed. Im very satisfied with this purchase and expect this knife to hold up well. ... show more
Reviewed in the United States on June 12, 2025 by Josh

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