• Ultra-Fab Stacker Jacks 4-pack heavy-duty die-cast aluminum RV trailer stabilizers
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Ultra-Fab Products

Stacker Jacks (4/pack) 48-979004 (Ultra-Fab Products)

Stacker Jacks (4/pack) 48-979004 (Ultra-Fab Products)

$60.30
$91.07 $60.30
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  • Ships from Elkhart, IN
  • Alaska/Hawaii - Contact Us For Shipping Options
  • Rock‑Solid Trailer Stabilization: Purpose‑built to keep travel trailers, horse trailers, and cargo haulers steady and level so your rig doesn’t wobble like a newborn deer every time someone steps inside.
  • 6,000‑lb Die‑Cast Muscle (Per Jack): Super‑tough die‑cast aluminum delivers serious strength without adding unnecessary weight—because your trailer already carries enough “just in case” gear.
  • Adjusts From 11" to 17": A wide height range makes leveling easy across different trailer sizes, campsites, and “creative” parking situations.
  • Full 4‑Corner Coverage: Includes four stabilizers to lock down all corners of your trailer or RV for maximum stability—no more rocking, swaying, or surprise midnight tilt‑a‑whirls.
  • Compact, Stackable, and Easy to Use: Nesting design saves precious storage space, and the built‑in handles make setup fast and tool‑free. (Stabilizing only—these aren’t automotive jack stands, superhero lifts, or anything wild like that.)
  • SKU / Item Number: 48-979004
  • Instructions & Warranty (Stacker Jacks (4/pack))
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  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
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Anonymous

These jacks are perfect for my small single person trailer. Easy to assemble and adjust.

M
Michael Blunt

The flip down support jacks on my camper are inadequate, thin material and prone to bending sideways under load. These aluminum jack stands are the perfect solution - lightweight, easily stowable, infinitely adjustable, strong and very affordable. – Michael Blunt

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Kyle

Awesome. Makes a world of difference – Kyle

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EM

Works perfectly to secure our camper. Easy to store and utilize. Has provided significant stability and is highly recommended. – EM

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Shawn Storm

Have used these many times, these strong suckers eliminate movement more than the preinstalled ones that were damaged due to backing over a hilly terrain. Easy to use, smooth functioning. – Shawn Storm

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Tammara L.

I needed a couple of these for my camp trailer. They’re very sturdy and good quality – Tammara L.