KastKing Spartacus Fillet Knife
- Fillet Knife
- 1
- 8Cr14 Stainless Steel
- White
- More reviewed than 74%
A stainless fillet knife sized for typical fish cleaning tasks, with a sheath included for storage.
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How it ranks among the 74 fillet knifes we track
4.6★ across 778 Amazon ratings, Bayesian-smoothed toward the category average.
778 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 74 fillet knifes we track - how the scorecard works · full fillet knifes data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 9 inch fillet knife from KastKing built with an 8Cr14 stainless steel blade and sold with a sheath. It's aimed squarely at cleaning and filleting fish rather than general camp or utility use.
Stainless steel is the practical choice here since fillet knives spend most of their life wet and near saltwater or fish slime. The included sheath covers both blade safety and storage between trips.
- 8Cr14 stainless steel blade
- 9 inch fillet knife length
- Sheath included
- Rated 4.6 stars across 778 reviews
Who it's for
Anglers who clean their own catch and want a dedicated fillet knife rather than a general kitchen knife. Less relevant if you're looking for a knife longer than 9 inches for larger fish.
Strengths and trade-offs
Drawn from this product's published specifications.
- Stainless steel resists corrosion in wet conditions
- Sheath included for safe storage and transport
- Sized specifically for fillet work
- 9 inch blade may be short for larger fish
- No stated blade flex or hardness rating
Performance notes
The 8Cr14 stainless steel is chosen for corrosion resistance around wet, salty conditions, and the knife is sized specifically as a 9 inch fillet blade rather than an all-purpose fishing knife.
Specifications
| Brand | KastKing |
|---|---|
| Dimensions & fit | |
| Item Weight | 15.2 ounces |
| Length | 16.9 inches |
| Construction & materials | |
| Material | 8Cr14 Stainless Steel |
| Color | White |
| Included components | |
| Pieces | 1 |
| Other details | |
| Special | Fillet Knife and Sheath |
Other KastKing fillet knifes
How it compares
This product against the closest alternatives we track in fillet knifes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| KastKing Spartacus Fillet KnifeThis product | 4.6 / 5 | 778 | 3.9 / 5 |
| HOSHANHO 7 inch Fillet KnifeHOSHANHO | 4.7 / 5 | 3,900 | 4.5 / 5 |
| BUBBA 1095705 Fillet KnifeBubba | 4.7 / 5 | 6,300 | 4.4 / 5 |
| Rapala BPFNF6SH1 Fillet KnifeRapala | 4.7 / 5 | 2,300 | 4.3 / 5 |
| WORKPRO W125223AE Fillet KnifeWORKPRO | 4.7 / 5 | 828 | 4.4 / 5 |
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Questions about the KastKing fillet knifes
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What steel is the KastKing Spartacus blade made from?
8Cr14 stainless steel.
Does it come with a sheath?
Yes, the knife is sold with a sheath for storage.
What is the blade length?
It's built as a 9 inch fillet knife.