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Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black)
Formulamod

Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P

Bottom line: The Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS ($17.99 on Amazon as of 2026-10-07): Covers a full ATX build: 24-pin, 4+4 EPS, and two 8-pin PCI-E in one kit; main trade-off: extensions add length behind the tray, so tight cases get crowded.

$17.99

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Buy on Amazon — $17.99 Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Covers a full ATX build: 24-pin, 4+4 EPS, and two 8-pin PCI-E in one kit
  • ✓ Pre-bent layering keeps 180-degree bends flat instead of fanned
  • ✓ Thick 18AWG wire holds routed shapes without kinking
  • ✓ Cable combs included, so no separate comb purchase
  • ✓ Extension design works with any PSU, no cable swap needed

Cons

  • ✗ Extensions add length behind the tray, so tight cases get crowded
  • ✗ Only two PCI-E 8-pin runs, short for triple-connector GPUs
  • ✗ Black-only sleeving, no color options in this listing
  • ✗ Adds a second connector junction per line versus native cables

Manufacturer description

The Formulamod Sleeve Extension Power Supply Cable Kit turns a cluttered PSU compartment into a clean, show-ready build without replacing your power supply. The kit ships four extensions that cover a standard ATX system: one 24-pin ATX for the motherboard, one 4+4-pin EPS for CPU power, and two 8-pin PCI-E runs for your graphics card. Each cable uses thick 18AWG wire wrapped in a high-density flexible sleeve, so the runs hold a shape when you route them but still bend where you need them to. The detail that separates this Formulamod kit from generic sleeved extensions is the pre-bent design…

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SpecPicks Verdict

SpecPicks scored Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+… using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. Formulamod's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will these cables work with my power supply?

Yes. These are extensions, not replacement cables, so they plug in between your PSU's existing cables and your components. Formulamod lists them as compatible with all power supplies.

What cables are included in the kit?

Four extensions: one 24-pin ATX for the motherboard, one 4+4-pin EPS for CPU power, and two 8-pin PCI-E for the graphics card. Cable combs are included.

Do I need to buy cable combs separately?

No. The kit ships with several combs for routing and organizing the runs, so you can set spacing on the 24-pin and PCI-E cables without a separate purchase.

How thick are the wires?

All cables use 18AWG wire inside a high-density flexible sleeve. That gauge is stiff enough to hold a routed bend but still flexible enough to work in a case.

Are these cables good for a build with visible cable runs?

That is the main use case. The pre-bent design makes upper-layer wires slightly longer than lower-layer ones so a 180-degree bend stays neat, and the heat-shrink-less ends keep connectors slim.

Key Features

  • Including (1) 24-P ATX, (1) 4 + 4P EPS, (2) 8-P PCI-E
  • All cables are manufactured with thick 18AWG wires and come in a high-density flexible protective sleeve allowing for a stiff yet adaptable temperament. Comes with several cable combs to cleanly route and organize.
  • Premium sleeved cable extension, compatible with all power supplies
  • Pre-bent Design: The upper layer cables are slightly longer than the down layer ones, which make the cables remain a perfect neat look after bent 180° .
  • Heat-Shrink-Less Cable Design

Full Specifications

BrandFormulamod
Colorblack
Gauge18
ModelFm-NCK1-300
Cable TypePCI Express
Item ShapeRound
Model NameFm-NCK1
Unit Count1 Count
Part NumberFm-NCK1-300
Connector TypeAtx, Eps, Pci-e
Number of Pins4
Outer Materialplastic" or "rubber
Maximum Current10.17 A
Maximum Voltage12 volts_of_direct_current
Number of Items2
Pre-bent DesignThe upper layer cables are slightly longer than the down layer ones, which make the cables remain a perfect neat look after bent 180° .
Special FeatureBraided, Pre-bent design
Connector GenderMale-to-Female
Specification MetUL
Compatible DevicesPC
Full listing titleFormulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black)

Ready to buy?

Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $17.99

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Formulamod Sleeve Extension Power Supply Cable Kit 18AWG ATX 24P+ EPS 8-P+PCI-E8-P with Combs for PSU to Motherboard/GPU (Black)
$17.99
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