Most RVs do not feel unstable because the frame is weak. They feel unstable because the suspension is still doing its job, compressing and rebounding every time somebody steps from the bathroom to the kitchen. The fix is not heavier springs. It is a set of legs that clamp between the chassis and the ground and take that last inch of weight off the leaf springs. That is the whole idea behind the best rv jacks for stabilizing, and choosing the wrong ones is why so many rigs still rock after a weekend of cranking.
I have spent a lot of time reading owner threads on iRV2, Good RV Advice and the RV Living subreddit before writing this, and one pattern repeats constantly: owners who get real results level the rig on blocks first, then use stabilizers to close the gap. Owners who crank jacks against a rig that is still hanging on its tires end up with four feet taking wildly different loads and still a floor that moves.
This roundup covers ten of the most widely reviewed RV stabilizer jacks on the market right now, from bolt-on 9,000 lb scissor sets to portable aluminum stack jacks and telescoping legs for tall frames. Every capacity, height range and weight below comes from the manufacturer listing and the owner reviews, not from my own scale. For the electrical side of a boondocking setup, our generator guide for RV camping covers the other half of off-grid life, and our portable solar panel picks cover the charging side.
Table of Contents
Top 3 Best RV Jacks for Stabilizing (October 2026)
If you want the short answer, these three cover the vast majority of trailer setups. The LIBRA 9K set is the one I would buy first. The RVGUARD stack jacks are the ones to grab when you refuse to drill into a frame you do not own.
LIBRA 9K 24 Inch Scissor…
- 9000 lb per jack
- 4 inch to 24 inch travel
- Electrophoresis coated 11-gauge steel
- Drill socket included
LIBRA 6K 24 Inch Scissor…
- 6000 lb per jack
- 24 inch extended height
- Complete mounting kit
- 3/4 inch drill socket
RVGUARD 6K Stack Jacks 4 Pack
- 6000 lb capacity
- 11 inch to 17 inch range
- Cast aluminum body
- No drilling required
Best RV Jacks for Stabilizing at a Glance
All ten products below in one view. The table is ordered exactly as the individual reviews that follow, so you can jump straight to the row that matches your trailer.
| Product | Specs | Action |
|---|---|---|
| LIBRA 9K 24 Inch Scissor Set of 4 |
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Check Latest Price |
| LIBRA 6K 24 Inch Scissor Set of 2 |
|
Check Latest Price |
| RVGUARD 6K Stack Jacks 4 Pack |
|
Check Latest Price |
 Kohree 7500 lb Scissor Set of 2 |
|
Check Latest Price |
 VEVOR 6K Stack Jacks 4 Pack |
|
Check Latest Price |
 ROCKMAN 7500 lb Scissor Set of 2 |
|
Check Latest Price |
 Beech Lane Universal Stabilizer Pair |
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Check Latest Price |
 BAL 25 Inch C Jacks Set of 2 |
|
Check Latest Price |
 Camco Eaz-Lift Telescopic Pair |
|
Check Latest Price |
 Kohree Slide Out Support Jacks |
|
Check Latest Price |
1. LIBRA 9K Heavy-Duty 24 Inch Scissor Stabilizers, Set of 4
LIBRA 9K lb HD 24″ RV Trailer Camper Stabilizer Leveling Scissor Jacks,Set4
9000 lb per jack
Alloy steel, electrophoresis coated
4 inch to 24 inch height
Pros
- 9000 lb capacity per jack in thick 11-gauge steel
- Electrophoresis coating resists corrosion
- Dual 3/4 inch hex magnetic sockets for fast drill operation
- Complete kit with 16 mounting screws socket drill bit and guide sticker
- Reviewers report a noticeably firmer floor with all four installed
Cons
- Set adds roughly 20 lbs of payload versus factory jacks
- Supplied drill bit is too weak for RV frame steel
- Self-tapping screws can strip if over-tightened
Four jacks in one box, 9,000 lb of rated capacity each, and a 4.7 average across more than 3,200 owner reviews. This is the set I keep coming back to because it solves the single most common complaint in this category, which is that two jacks only stabilize two corners and the other half of the rig still pivots.
The construction is 11-gauge alloy steel with an electrophoresis coating, which is the finish responsible for most of the corrosion complaints we found in the reviews for lesser steel jacks. Both legs come with 3/4 inch hex magnetic sockets, so a cordless drill takes the place of the crank handle and setup on all four corners takes minutes instead of a coffee break.
Owners consistently describe it as a step up from factory scissor stabilizers, and the most repeated caveat is weight. Four steel jacks add roughly 20 lbs of payload compared with a pair of 2,500 lb factory legs, which matters on a tongue-heavy travel trailer with a payload close to its limit. The second caveat is the included drill bit, which several reviewers replaced with a step bit before touching frame steel.
How it fits on a fifth wheel or a heavy travel trailer
At 24 inches extended and 4 inches retracted, this set clears the undercarriage on everything from a mid-size travel trailer to a large fifth wheel. Rated capacity is per jack, so four jacks at 9,000 lb each is far more than any corner of a typical trailer will ever place on a single leg.
The top plate is wider than a typical factory scissor leg, which spreads the load into the frame rail rather than concentrating it on a narrow strip of metal. Owners on iRV2 who drilled these into their I-beams report drilling takes real patience and that a step bit plus a slow, cool approach matters more than force.
Where owners report problems
The thread grease tip comes straight from experienced users in the reviews: set the screws by hand with a ratchet rather than driving them with an impact gun, or you will strip the self-tapping threads before the jack is ever loaded. Grease the screw threads each season as well, especially in salt-heavy regions.
At full extension the legs are stiff but not rigid, so a light nose weight can still show as a faint wobble. This is physics rather than a defect, and the same owners say the improvement over stock stabilizers is large enough that they stopped noticing it within a week.
2. LIBRA 6K 24 Inch Scissor Stabilizers, Set of 2
LIBRA 24″ 6K lbs RV Trailer Camper Stabilizer Leveling Scissor Jacks set2
6000 lb per jack
Steel with electrophoresis finish
24 inch extended height
Pros
- 6000 lb per jack in heavy-duty coated steel
- Wide bow-tie base for soft and uneven ground
- 3/4 inch magnetic socket for drill setup
- Complete kit with screws socket bit and guide sticker
- Owners report wobbly campers feel solid after fitting
Cons
- Only two jacks per set so full four-corner coverage needs two sets
- Supplied bit dulls quickly if drilled hot
Same engineering as the 9K set at 6,000 lb per jack, sold as a pair. For a trailer that already has two usable rear stabilizers and two weak or missing front ones, this is the sensible middle ground, and the 4.7 average across more than 2,300 reviews says the smaller capacity has not disappointed people.
The wide bow-tie base is the detail that matters on gravel. A narrow foot distributes load over a small area and sinks into soft ground overnight, which is the number one complaint forum readers raise about small stabilizer feet. A wider base keeps the rig where you left it until morning.
Reviewers talk about replacing bent original equipment in about 30 minutes with the included hardware and the drill socket, which is the fastest install path in this roundup. The recurring tip is to drill slowly and keep the bit cool, because the supplied bit dulls if you rush frame steel.
Several owners also praise the mounting documentation, which matters more than it sounds when you are drilling into an I-beam you cannot see. If you are not comfortable drilling the frame, this is not the set for you, and the portable options further down are the honest alternative.
Why most owners buy two sets instead of one
Two jacks stabilize two corners. Owners on iRV2 repeatedly make the point that four well-placed scissor jacks beat two, because the diagonal pairs resist the roll that makes people seasick. Buying two sets also gives you matched pairs for a slide-out or a fifth wheel king pin area.
As with the 9K set, a light 24 inch scissor leg is not perfectly rigid at full extension. Reviewers describe a small amount of residual nose movement, but not the end bounce or floor bounce they had with stock equipment.
Watch the weight and the drilling
A pair weighs about 20 lbs, so doubling up to four costs you roughly 40 lbs of payload. On a trailer already loaded near its tongue weight limit, plan where the weight goes rather than bolting on all four corners by reflex.
The second practical warning is about overtightening. Self-tapping screws into frame steel strip easily, and a stripped hole means a jack that works loose under vibration. Hand-thread them, snug them with a ratchet, and move on.
3. RVGUARD 6000 lb Cast Aluminum Stack Jacks, 4 Pack
RVGUARD RV Stack Jacks 4 Pack, 6000 Lbs Aluminum Stabilizer Jacks
6000 lb per jack
Cast aluminum, corrosion resistant
11 inch to 17 inch travel
Pros
- Four cast aluminum jacks in one inexpensive package
- 6000 lb capacity with a square base design
- No welding or drilling
- Position and spin the T-handle
- Set nests together for compact storage
Cons
- 11 to 17 inch travel suits low frames only
- Steel screw and nut will rust without greasing
- Some sets arrive missing a screw jack or rubber pad
- Bends if loaded beyond rated capacity
This is the set people who rent their trailer, or bought it used with a frame they do not want to drill, keep in the storage compartment. You carry them out, position them under the frame rails and spin the T-handle. There is no install and nothing to remove when you leave the campsite.
Cast aluminum resists corrosion, which is why you will not find rust complaints in these reviews. The square base spreads load reasonably well for a portable jack, and the entire set nests for storage, so it takes up very little room when it is not deployed.
Users report noticeable reductions in camper rocking, especially with two jacks placed per side near the wheels rather than one at each corner. The limited height range is the real constraint: 11 inches to 17 inches only reaches lower frames, and owners working on taller rigs add 2×4 blocks underneath to make up the difference.
Rust on the steel screw and nut is the most common maintenance note, and it is an easy one. A shot of grease on the threads twice a year prevents the screw from seizing in the nut, which is the failure that actually strands people.
Best used on pop-ups and lightweight rigs
At 6,000 lb of rated capacity per jack, this set handles pop-ups, teardrops and small travel trailers without strain. Owners on teardrop forums pair them with the front and rear frame rails and report the end bounce disappearing on hard surfaces.
The rubber pads on top of each jack protect the floor and spread contact, which matters if your trailer has soft particle board under the frame rail. The square base is narrower than a scissor bow-tie base, so on soft ground a rigid pad underneath it makes a visible difference.
When not to choose stack jacks
If your rig has a high frame, this set will not reach without blocks, and stacking blocks under a jack on soft ground is exactly the scenario that produces a slow lean overnight. For high-clearance trailers, look at the 24 inch scissor sets or the telescoping pair instead.
There is also the honest capacity note: these bend if you overload them past the rating, and the rating assumes the jack is plumb and evenly loaded. Do not use them to lift a trailer, only to take weight after the rig is already on blocks and the tires are chocked.
4. Kohree 7500 lb Scissor Stabilizer Jacks, 24 Inch, Set of 2
Kohree 7500lbs RV Stabilizer Leveling Scissor Jacks 24″, Set of 2
7500 lb per jack
24 inch maximum extension
4 inch retracted height
Pros
- 7500 lb capacity per jack in coated heavy-duty steel
- Smooth tooth gear arm extends straight and vertical
- Works with included crank or a power drill socket
- Wide bow-tie base for trailers and pop-ups
- Strong sales rank reflects wide adoption
Cons
- Power drill is not included
- Many owners add separate stabilizer pads
7,500 lb per jack sits in the middle of the capacity range, which makes this the most common recommendation for a mid-size travel trailer between 5,000 and 9,000 lb GVWR. It extends 24 inches, retracts to 4 inches and retracts to a 26 inch length, so it clears the vast majority of undercarriages.
The gear arm design is worth noticing. Instead of a simple scissor linkage that can walk sideways as it extends, the toothed arm drives the leg in a straight vertical line, which reviewers single out as the reason it feels more solid than cheaper sets.
Operation is flexible. You get a crank handle and a drill socket, and you supply the drill if you want speed. The wide bow-tie base handles uneven ground, and the electrophoresis coating addresses the rust that shows up on uncoated steel legs after a year or two of wet camping.
The most common owner upgrade is a separate stabilizer pad under each jack, which widens contact with the ground and keeps the rig from settling on soft campsites. Several owners also note the warranty is not offered on this set, so a thoughtful install matters.
Matching capacity to your trailer
Rule of thumb from the forums: match per-jack capacity to roughly a quarter of your loaded trailer weight, and never go below 5,000 lb. A 7,000 lb trailer sits comfortably in this set’s range, and owners running heavier fifth wheels report it still performs because stabilizers only ever see the corner load after the tires are chocked.
The measurement that matters is ground-to-undercarriage clearance, not the rating. If your frame rail sits 20 inches off the ground with the tires chocked and the rig level, a 24 inch jack gives you the travel you need. Add pad thickness to the number before you order.
Watch for over-raising with a drill
Drill-cranked jacks are easy to over-raise, and raising past firm resistance can strain the frame or bend a leg. Owners who have done damage describe the same symptom: a jack that feels fine at first, then develops a lean a few weeks later.
Crank by hand until you feel the load transfer, then stop. If the screw stops turning easily and the floor is firm underfoot, you are done. That rule applies to every jack in this roundup, and it is the single most useful safety habit in this whole category.
5. VEVOR 6000 lb Aluminum Stack Jacks, 4 Pack
VEVOR RV Stabilizer Jacks, 4 Pack Aluminum RV Leveling Jacks, RV Stack Jacks for RV Travel Trailer Camper, Single Screw Jack Support up to 6000 Lbs, Adjustable from 11 inch to 17 inch
11 inch to 17 inch height
ADC12 die-cast aluminum
1.65 lbs per jack
Pros
- Weighs 1.65 lbs each so one person can carry all four
- ADC12 die-cast aluminum body resists corrosion
- Galvanized steel screw
- T-handle adjusts quickly
- Cushioned rubber ring protects the floor
Cons
- Smaller than some buyers expect
- Light duty feel suits lighter campers
- Best used as a set of four at even heights
- Rating is listed as 4000 lbs despite the 6000 lb headline
At 1.65 lbs per jack, this is the set you can carry with one hand. That sounds like a small detail until you are walking a gravel path with two arms full of gear and a jack in each hand, which is the everyday reality of portable stabilization.
The body is ADC12 die-cast aluminum with a 20 gauge galvanized steel screw and a triangular support structure. Owners who expect a flimsy product based on the weight report that it stops end bounce on lighter rigs just as well as heavier options.
The honest framing here is capacity. The listing carries a 6,000 lb headline figure and a 4,000 lb rated load, and buyers note that discrepancy frequently. Treat the lower number as the working figure, which still covers a pop-up, a teardrop or a small travel trailer without strain.
Height adjustment runs 11 inches to 17 inches by T-handle, matching the RVGUARD stack jacks, so this set serves the same low-frame use case with less weight to carry. International reviews from Italy, Germany and France specifically praise the low weight and the steadiness of the triangular foot.
Best for rigs that move every weekend
For a trailer that gets hooked up Thursday and unhooked Sunday, the deciding factor is how easy the jacks are to deploy and stow. Carry them out, spin the handle, drive away. There is nothing installed on the frame and nothing to remove, which is why owners of rental and borrowed trailers gravitate here.
Use all four and keep the heights even. A jack set at three different heights stabilizes badly, because the rig is then supported at three different points and free to pivot at the fourth. Match the heights before you crank.
Where the light build shows
The most common criticism is size. Several buyers report the jacks are smaller than they expected, which usually means the frame rail clearance is greater than 17 inches. Measure twice and add your pad thickness before ordering.
The second limitation is heavy campers. Once a trailer is loaded near the top of its GVWR, four light aluminum jacks feel marginal. If you tow something substantial, spend the extra and move up to a 7,500 or 9,000 lb steel scissor set.
6. ROCKMAN 7500 lb Scissor Stabilizers, 24 Inch, Set of 2
ROCKMAN 24″ 7500lbs RV Camper Trailer Stabilizer Leveling Scissor Jacks PK2
7500 lb per jack
4 inch to 24 inch height
3-bubble level included
Pros
- 7500 lb capacity in reinforced coated steel
- Wide bow-tie base handles soft and uneven ground
- Includes 3/4 inch magnetic socket and a 3-bubble level
- Highest average rating among scissor sets here
- 24 inch extension suits larger trailers
Cons
- Set weighs about 40 lbs and adds payload
- For stabilizing and leveling only
- never for lifting
This set carries the highest average rating in the roundup, with 85 percent of reviews at five stars. The reason owners single out is not the steel, though it is genuinely reinforced and rust resistant. It is the small 3-bubble magnetic level packed in the box.
Matching four jacks to the same effective height is fiddly, and a level lets you get them close in a couple of minutes instead of guessing. Owners of multi-axle trailers with uneven ground describe it as the difference between a level rig and one that slowly leans overnight.
Capacity is 7,500 lb per jack with a 4 inch to 24 inch range and a 26.5 inch retracted length, so the geometry matches the other 24 inch scissor sets on this list. The 3/4 inch magnetic socket handles drill operation, and construction is consistently described as rigid.
The weight is the trade-off, about 40 lbs for the pair, which is heavier than the equivalent LIBRA pair. On a tongue-heavy trailer close to its payload ceiling, that number deserves a look before you order, and it is the main reason this set is not our first pick.
For anyone who wants the rig level, not just quiet
If you also run an absorption refrigerator, level matters more than stability. Those units are designed to work while level and are damaged by running on a slope, so the included level is not a gimmick. It is a functional tool for a specific reason.
The same applies to slide-out rigs. A jack set at mismatched heights twists the slide-out room as it extends, which is a common and expensive complaint. A level makes matching them straightforward.
Honest limits
This is a stabilizer and leveler, not a lifting device. The listings and the owners are explicit about this. Using it to raise a trailer off its suspension puts a side load into a scissor linkage that is not designed for it, and bent legs are the predictable result.
As with the other 24 inch scissor sets, there is slight give at full extension under a concentrated corner load. Chock the wheels first, level on blocks while the tires still carry the rig, then use these jacks for the last inch and the whole frame stays loaded as intended.
7. Beech Lane Universal RV Stabilizers, 12 to 26.5 Inch, 2 Pack
Beech Lane Universal RV Stabilizer, Reduces RV Wobble, Compact Foldable Design for Easy Storage, Adjustable Height of 12″ to 26.5″, Patented (2 Pack)
12 to 26.5 inch clearance
Folds in half for storage
Aluminum and stainless steel
Pros
- Sharp reduction in interior rocking and sway
- Folds in half to halve the storage footprint
- Storage bags included
- Aluminum and marine-grade stainless steel
- Installs in 10 to 20 minutes with no drilling
Cons
- Only two adjustment holes in the legs
- Reduces movement rather than removing it
- Not a replacement for leveling on soft or sloped sites
This one works differently from everything else here. Instead of bolting to the frame, it clamps under the RV as a wide top bar on a screw leg, so there is nothing drilled and nothing to remove. Owners skeptical of the light aluminum build report that interior sway drops sharply within minutes of installation.
The 12 to 26.5 inch clearance range is the widest in the roundup, which makes it one of the few options here that fits a fifth wheel, a motorhome and a travel trailer with the same part. The hinged top bar folds in half, and the storage bags included keep it out of sight in a compartment.
Full-time RVers and owners sensitive to motion call it transformative, and the fifth wheel wind shake case is the most commonly reported win. The wide top bar spreads contact across more of the underside than a scissor top plate, which is part of why the result feels larger than the product’s weight would suggest.
The honest limitation is that it reduces movement rather than eliminating it, and the improvement is smaller on uneven or sloped ground. Two adjustment holes in the leg also make height matching fiddlier than a drilled scissor jack, which is the most common request in the reviews.
Best for renters and borrowed trailers
If you do not own the frame, this is the cleanest answer on the list. Installation takes 10 to 20 minutes, involves no fasteners into structure, and the whole package stows flat. Owners of rental rigs and seasonal trailers use it precisely for that reason.
It also works as an add-on rather than a replacement. A rig with two factory scissor stabilizers can gain a lot by adding a second pair at the front, and a non-invasive unit like this is the easy way to do that without touching the frame.
Where it will not replace a proper leveling jack
On soft ground or a sloped site, the rig still needs to be leveled on blocks while the tires carry the load. This unit stabilizes, it does not level a trailer on a grade, and owners who expected otherwise report disappointment in exactly those conditions.
It is also a two-jack set, so full four-corner coverage is not included. Position them at the widest effective track you can reach, typically near the wheels, since that is where leverage against side-to-side motion is greatest.
8. BAL 25 Inch C Jacks With Handle, Set of 2
BAL 23225 25″ C Jack with Handle – Set of 2
25 inch length
Enclosed heavy-gauge lead screw
Pairs with 2000 lb tongue jacks
Pros
- Beefy lead screw roughly twice the diameter of typical scissor screws
- Enclosed screw body removes the exposed thread hazard
- Retracts close to the frame and adds real cross-bracing
- Can mount to a bumper with U-bolts
- Outlasts factory hardware in owner reports
Cons
- Foot pads and C-channel sold separately
- Included number 14 screws are undersized
- Hangs about 3.5 inches below the frame
This is the one experienced RVers in the forums keep recommending to anyone who wants a stabilizer that lasts. The lead screw is roughly twice the diameter of a typical scissor jack screw, and unlike most scissor jacks the screw is fully enclosed inside the channel, so there is no exposed thread to catch clothing or a hand.
It also does something a scissor jack does not. Because it retracts tight against the frame, it acts as a structural cross-brace, adding rigidity to a trailer frame that flexes. Experienced owners describe it as the premium scissor replacement, and the 4.7 average across 661 reviews reflects that.
Mounting is flexible in a way no other set here manages. U-bolt it to a bumper, bolt it to a crossmember, or use a C-channel connector, and none of those options require welding or drilling into structural members. That makes it a favorite for people who want an upgrade without permanent changes.
It fits BAL tongue jacks rated to 2,000 lb, and the enclosed screw body is a different size from other C-jack lines, so plan on one brand. The consensus advice in the reviews is to buy the foot pads and C-channel separately and to substitute proper bolts for the small supplied screws.
Why the enclosed screw matters in practice
Exposed threads on a scissor jack are a pinch hazard for anyone crawling under a trailer at a dark campsite, and the enclosed design removes it. That matters most on the rear jacks, where the leg sits right where your hands go when you position the foot.
It also resists bending under a side impact. Owners report the screw is roughly twice the weight of a typical scissor set, and that mass is what keeps the leg straight when a tire blows out and the rig drops onto one corner.
Installation notes and honest drawbacks
Support the trailer with a floor jack while you fit these. At 28 lbs for the pair, they are not a one-hand job, and a jack hanging by one fastener while you work is how frames get damaged. Our floor jack picks for home garages cover the support side if you need one.
Three drawbacks are worth stating plainly. The foot pads and C-channel are separate purchases. The included number 14 self-tapping screws are considered undersized, and many owners switch to 5/16 inch bolts. And the leg hangs roughly 3.5 inches below the frame, so check your ground clearance if you pull tight campsites.
9. Camco Eaz-Lift Telescopic Stabilizer Jacks, Set of 2
Camco Eaz-Lift Telescopic RV Jack, Set of 2 – Adjustable from 16-inches to 30-inches – Constructed of Durable Steel & Powder Coated – Features a 6,000 lb. Load Capacity – 48864
16 to 30 inch adjustment
6000 lb load capacity
Powder-coated steel
Pros
- 16 to 30 inch range exceeds every 24 inch scissor set here
- 6000 lb capacity in powder-coated steel
- Quick-release pull pin makes height changes fast
- Bracket-mounted design suits tall suspension travel
- Recognized OEM part number for easy cross-referencing
Cons
- Telescoping tube adds weight and bulk
- Needs a tighter and more accurate mounting than portable units
This pair exists for one reason: 14 inches of adjustment between 16 and 30 inches, which no scissor jack in this roundup can reach. Tall fifth wheels, truck campers with high suspension travel and lifted trailers sit outside the working range of a standard 24 inch scissor leg.
Capacity is 6,000 lb per jack in powder-coated steel, and the quick-release pull pin lets you change height without re-crank the whole leg. It carries a recognized OEM part number, so it cross-references cleanly if you are matching a factory bracket.
The design is bracket mounted, which means real installation work. Owners treat it as a replacement for factory telescoping stabilizers rather than an addition, and the mounting has to be square and correct or the leg binds. Once mounted, the pull pin makes daily height changes nearly instant.
Honesty about the category matters here. Forum owners are blunt that telescoping legs are often the least favorite option, because telescoping tubes can jam and pinch. The TNTTT forum threads about stabilizers are full of owners moving away from telescoping designs toward scissor jacks for exactly that reason.
When telescoping travel is the deciding factor
Measure ground-to-undercarriage clearance with the trailer level and the tires chocked. If the number exceeds 24 inches, a scissor jack simply cannot reach, and a telescoping unit like this is one of very few options. That is the entire argument for it.
Some owners also run them high, extending the leg further than the factory position, which lengthens the usable range. That is a legitimate technique as long as the leg remains square and you do not exceed the frame load.
The jam and pinch problem, honestly
A telescoping tube has more places to bind than a scissor mechanism, and dirt in the pin holes is the usual cause. Clean the pin, keep the tube greased, and retract the leg fully before storage so the seal does not take a set.
There is also a pinch risk during extension, so keep hands clear of the moving sections and crank slowly. If you have small children crawling under the trailer, weigh that against the scissor alternatives, where the risk sits at the exposed foot instead.
10. Kohree RV Slide Out Support Jacks, 20 to 49 Inch, Set of 2
Kohree RV Slide Out Supports Jack, with Flat Top Support Block, Set of 2
20 to 49 inch height range
5000 lb per jack
Stainless steel with flat top
Pros
- Flat top block removes the need for an extra wood pad
- Crank handle and drill socket both included
- 20 to 49 inch range covers most motorhome slide-outs
- 5000 lb per jack in stainless steel
- Consistently high 4.8 average from owners
Cons
- Built to stop slide-out shake
- not to carry trailer weight
- Warranty is only two months
- Slide-out specific so it is not a corner leveler
Slide-out shake is a separate problem from body roll. A room that extends on rollers develops its own vibration, and the standard response has been a screw jack under the room with a wood block on top. This set ships with a flat top support block, so the extra lumber step disappears.
Height runs 20 to 49 inches, which covers slide-outs on most motorhomes and larger travel trailers. At 5,000 lb per jack, 10,000 lb for the pair, and stainless steel construction, it is over-specified for a room that usually sees a fraction of that.
Both a crank handle and a drill socket are included, so you can raise one jack by hand or match two rooms quickly with a drill. Owners rate the flat top as a genuine upgrade over models that need a separate pad, and the 4.8 average reflects consistent satisfaction.
Be clear about the scope. Reviewers repeatedly state that this is for reducing slide-out shake, not for supporting vehicle weight. It is not a corner leveling stabilizer and should not be used as one, however capable its rating looks on paper.
Best used under extended rooms, not at the corners
Position each jack under the outer edge of the room, on the frame rail or the slide-out bracket, and raise until the room stops shifting when someone walks past it. Stop at firm resistance. On a room that extends over uneven ground, the jack does the work of a shim that keeps sliding.
It pairs well with the corner stabilizers in this roundup. The corner jacks stop the body from rocking, the slide-out jack stops the room from bouncing, and owners who run both describe the difference as obvious within a week of full-time use.
Limitations worth knowing
The two month warranty is the weakest in this roundup, and on stainless steel hardware that is a fair trade for the price point but worth factoring in. Treat the threads with care and expect to grease them.
At 49 inches fully extended the screw length is long, so check the retracted length of 5.31 inches against your storage space before committing. These are the bulkiest item in the roundup, and on a small trailer with limited storage that matters.
Stabilizer Jacks vs. Leveling Jacks: The Difference That Matters
A stabilizer jack takes weight off a parked RV so it stops rocking. A leveling jack raises or drops a corner to bring the rig to level. They are different jobs, and using a stabilizer to level a trailer by lifting a tire off the ground is the most common way people damage a frame in this category.
The sequence that works is this. Drive the rig onto blocks while the tires still carry the load, chock the wheels, then use stabilizer jacks to take up whatever gap remains. Stabilizers finish the job. Levelers start it.
Stabilizing jacks have no meaningful lifting range and no brake. Leveling systems do. When you see a product described as a stabilizer and leveling scissor jack, that is exactly the type in this roundup, and the manual for each one is explicit that it is for stabilizing and leveling only.
How to Choose RV Stabilizer Jacks: 6 Criteria That Decide It
Capacity first. Match per-jack rating to roughly a quarter of your loaded trailer weight, and treat 5,000 lb as a practical floor. Pop-ups and teardrops sit in the 5,000 to 6,000 lb range, mid-size travel trailers between 6,000 and 7,500 lb, and fifth wheels and toy haulers above that.
Height second. Measure from the ground to the underside of the frame rail with the rig level and chocked, then add the thickness of any pad you plan to use. A jack that cannot reach your clearance is useless no matter what it is rated for.
Type third. Scissor jacks with 24 inches of travel suit almost everything. Telescoping legs suit high frames above 24 inches. Stack jacks suit low frames under 17 inches. Non-invasive clamp units suit trailers you do not own. Slide-out jacks solve a different problem entirely.
Material fourth. Coated steel is heavier and tougher, which matters for a bolt-on set that stays on the frame year round. Cast aluminum is the choice for portable sets, because corrosion resistance matters more when the jack lives in a damp storage compartment.
Power source fifth. Manual cranks with a drill socket are the sweet spot. A socket adapter means you can use a cordless drill for speed, and a hand crank is still there when the batteries die. Electric stabilizers add a wiring and control failure point to a system that works fine mechanically.
Count sixth. Two jacks stabilize two corners. Forum consensus is that four well-placed jacks beat two every time, because diagonal pairs resist the roll that causes motion sickness. If your trailer only has two mounting points, plan where the second pair goes before you buy.
How to Stabilize an RV Safely in 7 Steps
Chock the wheels before anything else. Every stabilizer in this roundup assumes the tires are not carrying the load, and a rig that can still roll is a rig that can tip. Tandem chocks on both sides of the wheel pair, not one.
Drive onto blocks while the tires still carry the rig. This is the step most guides skip and the one that forum owners insist on. Level the trailer using the tongue jack and block stacks, on its tires, where the suspension is loaded as designed.
Disconnect the tow vehicle. Stabilizers on a hitched trailer do almost nothing, and working under a trailer attached to a truck is how people get hurt.
Set your pads. On dirt, gravel or grass, a rigid leveler pad under each foot spreads the load enough that the rig does not settle overnight. Without a pad, small feet sink and you wake up to a lean.
Position each jack under a frame rail, not under floorboard or a slide-out room. Two jacks per side near the wheels give you the most leverage against side-to-side motion for the least effort.
Crank until you feel the load transfer, then stop. The moment the screw stops turning easily, the weight has transferred. Pushing past that with a drill is how bent legs and cracked frame welds happen.
Walk the rig and re-check. Step hard in the bathroom, then in the bedroom, then the kitchen. If a corner moves, the jack there is short. Over-crank it slightly, re-chock, and check again before the first night.
What Stabilizer Jacks Cannot Fix
Stabilizers take the last inch of weight off the suspension. They cannot make a soft suspension feel firm, and this is where a lot of owners spend money they did not need to. A rig with worn shocks and no stabilizer bar will still move underfoot after you add four jacks.
Upgrading suspension components is frequently the bigger lever. Heavier duty shock absorbers and front and rear stabilizer bars change how the frame behaves, while stabilizers only change how much weight the suspension carries at rest. For a rig that rocks violently when somebody walks past, the suspension is the place to start.
Strong-arm stabilizers are the other category editors tend to skip and forum readers do not. Where a scissor jack pushes straight up, a strong-arm unit braces the frame against the direction of the lean, and owners with travel trailers describe them as having the most impact of anything they have tried. On motorhomes, the same logic pushes further still, where hydraulic jacks only make a real difference if they can lift the coach off its suspension.
Wheel chocks are the free improvement. Opposing pressure on the tires limits rolling, costs nothing and does not depend on the ground being firm. Pair them with any set on this list.
Jack Pads, Blocks and Wheel Chocks
The single most common question in this category is whether blocks belong under a stabilizer. They do, and the forum answer is close to unanimous. A jack foot sitting on soft ground sinks a fraction of an inch per hour, and the rig leans before you have made coffee.
A rigid leveler pad under each foot spreads that load across a much larger area. On dirt, gravel and grass it is the difference between a level rig in the morning and one that has settled overnight. On concrete or asphalt it is unnecessary.
Wood blocks serve a different purpose. You drive onto them to level the trailer while the tires are still carrying the load, and only then finish with the jacks. Using blocks as jack feet instead is workable on firm ground and a common source of a slow lean on soft ground.
Frequently Asked Questions
What is the best RV wheel stabilizer jack?
The best RV wheel stabilizer jack for most trailers is a 24 inch scissor jack rated at 7,500 to 9,000 lb and mounted at all four corners. The LIBRA 9K 4-pack is our top pick because four jacks cover every corner and cut end bounce, while a two-jack set only stabilizes half the rig.
What is the difference between stabilizer jacks and leveling jacks for an RV?
A stabilizer jack takes weight off a parked RV so it stops rocking. A leveling jack raises or drops a corner to bring the rig to level. Leveling happens first, on the tires, using blocks and the tongue jack. Stabilizers then take up only the remaining gap.
What are the best stabilizer jacks for RV slide outs?
Slide-out support jacks with a flat top block and at least 20 inches of height adjustment are the right choice, because a room that extends on rollers develops its own shake. Place one under each room on the outer edge, crank until the shaking stops, and never use them to support trailer weight.
Do RV stabilizer jacks work?
Yes, when they are used the way they are designed. They work on a trailer that is already on blocks, chocked and disconnected. They will not fix a soft suspension, and on a rig with worn shocks you will still feel movement underfoot after installing four jacks.
Should you put blocks under stabilizer jacks?
On firm ground, blocks under a stabilizer are not necessary. On dirt, gravel or grass they matter a great deal, because small feet sink into soft ground and the rig leans overnight. A rigid leveler pad under each foot is the better answer than stacked wood.
What is the best jack for an RV?
It depends on the job. The tongue jack levels the trailer while it is still attached. Stabilizer jacks at the four corners stop rocking. Leveling jacks adjust side-to-side height on uneven ground. Wheel chocks stop the rig rolling. Most owners need all five, and they solve different problems.
Final Verdict: The Best RV Jacks for Stabilizing
After working through the specs, the owner reviews and the failure reports, the best rv jacks for stabilizing come down to capacity and coverage. The LIBRA 9K 24 inch 4-pack takes the top spot because 9,000 lb per jack, 24 inches of travel and four corners in one box is the combination most rigs need and the most owners recommend.
Buy the LIBRA 6K pair if you only need two corners or want to stay lighter on payload. Go with the RVGUARD or VEVOR stack jacks if you rent your trailer or refuse to drill a frame you do not own. Choose the Camco telescoping pair only when your clearance genuinely exceeds 24 inches.
Whatever you pick, remember the order. Chock, disconnect, level on blocks, then crank to firm resistance and stop. Used that way, any of these will change how your RV feels underfoot, and the rocking you thought was normal stops being normal very quickly.