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Block for trailer, RV, 5th wheel jacks and stabilizers
Strong
OX BLOX are the strongest trailer jack blocks on the market and are rated up to 10,000 lbs.
Stable
OX BLOX RV jack blocks are stable on practically any surface: grass, gravel, dirt, or asphalt.
Fits up to 9" jack feet
OX BLOX trailer jack blocks are specially designed to fit your tongue jack, post jack, foot jack, scissor jack, and more.
Stackable
Get more height with OX BLOX
OX BLOX are designed to stack on top of each other while still maintaining the same stability and strength. Even when stacked, OX BLOX are rated up to 10,000 lbs.
Made in USA
OX BLOX trailer jack blocks are designed and manufactured in the USA.
Stabilizes your RV
Placing OX BLOX jack blocks under the stabilizer jacks can help eliminate nearly all movement and sway. The OX BLOX MAXX is designed to fit round jack feet up to 9" in diameter.
- Strong and stable
- Made in USA
- 10,000 lbs capacity
- 100% recycled plastic
Peace of mind
OX BLOX MAXX trailer jack blocks give you the peace of mind knowing your RV is stable and secure. These blocks are heavy duty and will not fail you.
MOMMA.MARIE
2025-08-17 14:20:23
My wife and I have a 43’ Sierra Luxury 5th wheel, our 2nd RV, but 1st 5th wheel. I researched best pads and such and have used all the normal stuff out there. I saw a video on YouTube where a person built blocks much like the size of these and I was set to do that. I priced everything out and was ready to go. My wife surprised me literally the day before with these just so I wouldn’t have to spend time going and gathering all I needed to build them, be in the summer heat of south Texas🥵, and miss a day on the lake with her. Well, to her, I say thank you. These are great! . They are durable and easy to place. Storing isn’t horrible, yes they take space but if you RV, you understand what your trading when you use a product like this. I have 4 of these & 2 red buckets (typically use for the front). I can switch around as needed and have. I 100% see the value in these and definitely recommend these!
XNYKR
2025-08-15 14:54:38
Sure you can use stacked wood- but it cracks and splinters- not too mention it looks trashy. I tried a full set of yellow jack supports from a “Large Camping Store†they were not up to the job. They were too tall for stabilizer jacks and split dropping my tongue jack to the ground a waste of money.Enter OX BLOCK MAXX-They are stable, Criss cross reinforcement on the base will not break under tongue jack load. The height is perfect at 4.5 inches for stabilizers and interlocking stack of two for the tongue. The finger holes are a great touch.If you can get over the cost the function is top notch. One tip would be just buy these and skip the yellow ones that will save 150 bucks!
Timm
2025-07-11 18:11:53
Absolutely perfection.Completely indestructible.Even drove my RV onto them in order to escape out of a beached RV situation.I WISH THEY MADE RAMPS TOO!!!
Andrew B.
2025-05-26 14:33:08
Only used once so far but I wanted to review since there were so few written. It is definitely sturdy and I'm not worried about them breaking at all. I previously used cut pieces of redwood but those were beginning to crack after repeated use. These will slide on wood so just know that you probably shouldn't put these on top of wood. But, they are tall so it replaces two of the 2x's that I was using before. Going to buy a few more so I can stack them if needed. Only issue I had was that I didn't quite line up one of them with the jack. It was the opposite side from the landing gear control so I didn't notice it until I was already unhitched. No big deal, just caused the foot to flex a little while the weight was on it. Now I understand why the other brand puts magnets in theirs, but these may be too well built for magnets to work! Not that they are heavy, as they are not.
Scot L
2025-04-14 11:24:47
I purchased the set of four to use with our 5th wheel trailer. The blocks are very sturdy but don't weigh so much they are difficult to handle. The recess in the top is just right for the round feet on our leveling jacks and helps insure you have the weight of the trailer centered on the blocks. They stack nicely which makes storage easy. We like these much better than the thin stackable levelers that we used to use.
Ron C.
2025-02-26 14:32:16
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Photo Guy
2025-02-12 14:26:33
We recently traded in our travel trailer for a 5th wheel and I wanted blocks to put the leveling jacks on to prevent concrete staining and rusting of the jack pad. I came across these and since my rig has 6 leveling jacks that the 6 pack would be good. Great price comparable to what some of the other competitors had (these were less expensive😊) and they had a load rating of 10k pounds each (not that I have 10k lbs at each leveler) I figured they would hold up. So far I haven't been let down.
Hope Engel
2025-01-09 10:27:49
This is the second block I’ve purchased. Loved both of them and highly recommend! First one, the tailgate dropped down and out it went! Had to purchase another and I’m so happy I did!
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