KastKing Speed Demon Pro Fillet Knife Review
Our verdict
The KastKing Speed Demon Pro Fillet Knife carries the highest price in this comparison at $116.99, yet its 4.4-star average across 209 reviews is the lowest rating and smallest review count of the group, making it the hardest knife here to justify on the numbers alone.
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Anglers specifically drawn to the Speed Demon Pro's 16.5-inch length and thermoplastic elastomer build who have already decided the price is worth it for those particular specs.
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Skip it if you are rating-driven or budget-conscious, since it costs over $35 more than the next priciest knife here while scoring lower on both star rating and review volume.
- Material Thermoplastic Elastomers (TPE)
- Weight 1.85 Kilograms
- Length 16.5 Inches
- Color Orange
- Pieces 1.0 Count
- Priced 263% above the category median ($32.23 across 74 tracked models)
Our scorecard
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Owner rating4.4/5
4.4 average across 209 owner ratings
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Popularity1.8/5
209 owner reviews, fewer than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other fishing gear and tackle we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
Paying more usually buys either a better rating or stronger demand, and the KastKing Speed Demon Pro Fillet Knife is the one knife in this comparison where that trade doesn't clearly pay off. At $116.99, it costs more than any other fillet knife covered here, roughly $37 more than the next priciest option, the $79.99 WORKPRO W125223AE.
The knife is built with thermoplastic elastomer components, a material typically chosen for grip and durability rather than raw cutting performance, and it weighs 1.85 kilograms with an overall length of 16.5 inches, making it the heaviest and among the longest tools in this set. Orange coloring makes it easy to spot on a cluttered deck or in a tackle bag. Despite the premium price and substantial build, it holds a 4.4-star average across 209 reviews, the lowest rating and the smallest review count of any fillet knife in this comparison, and 200+ units bought last month, a middling figure next to the WORKPRO's 2,000+.
Against the field, the Speed Demon Pro asks buyers to pay the most for the least-proven track record here. The 1.85-kilogram weight and thermoplastic build may suit specific tasks, but the rating and review pattern give less reassurance than cheaper, more reviewed alternatives like the Kershaw 1259X or KastKing's own KNFSP5 kit.
Pros
- Thermoplastic elastomer construction is built for durable, secure grip
- 16.5-inch overall length is among the longest in this comparison
- Distinct orange coloring makes it easy to locate on deck or in a bag
- 200+ units bought last month shows ongoing, if moderate, demand
- At 1.85 kilograms, its substantial weight suggests a solidly built tool rather than a flimsy blade
Cons
- At $116.99, it is the most expensive fillet knife in this comparison by a wide margin
- 4.4-star rating is the lowest average of any fillet knife covered here
- 209 reviews is the smallest sample size in this comparison, making that rating less settled
- 200+ units bought last month trails well behind the 2,000+ moving on the similarly priced WORKPRO W125223AE
- At 1.85 kilograms, it is meaningfully heavier than lighter options like the 2.4-ounce Rapala 126SP
Specifications
| Material | Thermoplastic Elastomers (TPE) |
|---|---|
| Weight | 1.85 Kilograms |
| Length | 16.5 Inches |
| Color | Orange |
| Pieces | 1.0 Count |
Performance notes
Thermoplastic elastomer, the material listed for this knife, is generally chosen for a rubberized, non-slip feel rather than for the cutting edge itself, which suggests the TPE component sits in the handle or grip area rather than the blade. At 1.85 kilograms, this is the heaviest tool in this comparison, meaningfully more than lighter manual blades, which adds heft in hand but also more mass to carry in a tackle bag. The 16.5-inch overall length places it among the longest products here, though whether that reflects blade length or a full handle-to-tip measurement is not specified. The orange color has no functional impact on cutting but does make the tool easier to spot against a dark boat deck or tackle box interior. None of these specs, on their own, explain the lower star rating relative to cheaper, lighter alternatives in this set.
What buyers say
A 4.4-star average is the lowest rating among the fillet knives in this comparison, and with only 209 reviews behind it, that is also the smallest sample size here, meaning the rating carries less statistical weight than the 1,500-review Kershaw 1259X or the 828-review WORKPRO W125223AE. 200+ units bought last month is a moderate figure, well below the 2,000+ seen on the similarly priced WORKPRO knife, suggesting this product moves at a fraction of the pace despite a comparable price tag. Together, the smaller review base, lower rating, and slower recent sales make this the least strongly validated option among the fillet knives covered here.
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Frequently asked questions
Why does the KastKing Speed Demon Pro cost more than other fillet knives here?
At $116.99, it is priced above every other fillet knife in this comparison, including the battery-featured WORKPRO W125223AE at $79.99. The listed specs point to its thermoplastic elastomer build and 1.85-kilogram weight as likely contributors, though the exact reason for the premium is not broken out in the data.
Is the KastKing Speed Demon Pro well rated?
It holds a 4.4-star average across 209 reviews, the lowest rating and smallest review count among the fillet knives in this comparison. Cheaper alternatives like the Kershaw 1259X and KastKing's own KNFSP5 kit both score higher across far more reviews.
How does demand for the Speed Demon Pro compare to similar knives?
It shows 200+ units bought last month, a moderate figure that trails well behind the 2,000+ seen on the similarly priced WORKPRO W125223AE. That suggests slower recent sales relative to at least one other premium-priced fillet knife in this set.