5 Trailer Jack Block Reviews: Find the Right Pick

Leveling your trailer on uneven ground can be a hassle, but the right jack block makes it simple and safe. Whether you’re parking on gravel, grass, or pavement, a sturdy block keeps your rig stable and protects your jack.

This guide reviews five top trailer jack blocks, highlighting their unique strengths. You’ll discover which model suits your towing setup, from heavy-duty options to stackable designs, helping you choose with confidence.

OX BLOX Heavy Duty Trailer Jack Block – 10,000 lb Capacity

The OX BLOX from EKON is built for serious stability, with a 10,000-pound rating that handles tongue jacks, post jacks, and stabilizer jacks with ease. Its patented design (US 11,673,440 B2) eliminates wobble on gravel, grass, dirt, or pavement, so you get a solid foundation every time. Made in the USA from 100% recycled plastic, this block is both eco-friendly and incredibly tough.

You can stack multiple OX BLOX for extra height without losing capacity—each stacked block still supports up to 10,000 pounds. This makes it a versatile camper leveling block and tongue jack block in one. If you need uncompromising strength and a stable surface on any terrain, this is your pick.

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• Strongest Trailer Jack Block on the Market: Rated up to 10,000 lbs per block, OX BLOX are built to handle tongue jacks, post jacks, foot jacks, scissor jacks, and stabilizer jacks — round or square. Use as a trailer jack stand, RV leveling block, or stabilizer pad for travel trailers, 5th wheels, boat trailers, horse trailers, and more.
• Stable on Any Surface: The patented design (US 11,673,440 B2) keeps your trailer stable on gravel, grass, dirt, and pavement. Engineered by Utah-based designers to eliminate wobble and sway, these RV jack blocks give you rock-solid support whether you are at a campsite, on a job site, or parked in your driveway.
• Stackable for Extra Height: Stack multiple OX BLOX on top of each other for added lift — rated to 10,000 lbs even when stacked. Works as a camper leveling block, tongue jack block, or hitch block to get your RV perfectly level on uneven ground.
• Made in the USA from Recycled Plastic: Compression-molded from 100% recycled plastic right here in America. UV and temperature resistant — built to last through years of camping trips, seasonal storage, and harsh weather without cracking or degrading.
• Easy to Carry: Grab handles on each side make these RV stabilizer blocks easy to move around your rig. At just over 8 lbs each, they take up minimal storage space in your camper or truck bed. OX BLOX camper blocks for jacks are the last trailer jack pads you will ever need to buy.

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VEVOR Trailer Jack Block – 6,000 lb Capacity RV Leveling Block

VEVOR’s trailer jack block offers a 6,000-pound capacity and a larger footprint for enhanced stability on uneven terrain. Made from durable polypropylene, it resists wear and weather, making it a reliable companion for your RV or travel trailer. The block is designed for effortless leveling—just position it under your jack and stack as needed for height adjustment.

Setup is quick, with no complex installation required. The increased surface area helps prevent sinking into soft ground, giving you peace of mind during your camping trips. If you want a budget-friendly block that still delivers solid performance, this VEVOR model is a smart choice.

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• Effortless Leveling: Improve your camping experience with our trailer jack blocks! Our blocks make leveling your RV a breeze, ensuring stability and comfort even on the most uneven terrain. Say goodbye to wobbling and discomfort caused by bumpy roads, and hello to hassle-free adventures!
• Swift Setup: No complex installations are required! Our RV camper blocks can be effortlessly positioned in minutes, and you can stack the jack blocks to adjust the height, ensuring your RV stabilizer/jack remains balanced for a convenient and enjoyable camping experience.
• Enhanced Stability: Our RV stabilizer blocks with an increased footprint, you'll enjoy superior stability no matter where you park. Upgrade your camping game today and experience the peace of mind that comes with safe and secure camping.
• Built to Last: Crafted from durable materials, our travel trailer leveling blocks resist various environmental challenges such as UV exposure, water, high temperatures, oil, tar, and soil. The integrated drainage hole design prevents rust and ensures long-lasting protection for your RV.
• Versatile Compatibility: Our camper stabilizer blocks are designed to accommodate a wide range of vehicles, such as travel trailers, campers, and motorhomes. Enjoy the convenience and versatility that our trailer jack blocks bring to your travels.

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KIKIRV 6-Inch Trailer Jack Block – 40,000 lb Heavy Duty

The KIKIRV jack block boasts an incredible 40,000-pound capacity, making it one of the strongest options for large trailers and fifth wheels. Constructed from high-performance polymer, it resists UV, oil, water, heat, and stains, ensuring long-lasting durability in harsh conditions. Its 6-inch height is stackable, and the locking mechanism prevents dangerous shifting during use.

This block is universally compatible with tongue jacks, wheel jacks, scissor stabilizers, and hydraulic jacks. Built-in side holes and a rope make it easy to carry and store. If you need extreme load capacity and weather resistance for heavy-duty towing, this KIKIRV block delivers.

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• Durable and Weather Resistance: Made of high-quality, high-performance polymer, offering UV resistance, oil resistance, water resistance, heat resistance, stain resistance, and weather resistance. It effectively conceals minor stains that may occur during outdoor use. Each pad can support up to 40,000 pounds.
• Generally Applicable: Universally compatible with tongue jacks, wheel jacks, scissor stabilizers, and 5th wheel hydraulic jacks. It can easily adapt to uneven terrain, effectively reducing shaking and movement of RVs or trailers.
• Adjustable Height: The stackable design allows you to easily adjust the height from 6 inches to your desired level, and the locking stacking mechanism prevents dangerous shifting. It maintains reliable load-bearing capacity even when stacked, eliminating wobbling.
• Easy to Carry and Store: This leveling block features built-in side holes and comes with a rope for easy carrying, lifting, and placement. Drainage holes prevent water accumulation, extending its lifespan.
• Strict Quality Inspection: Each pad undergoes rigorous pre-shipment quality inspection to ensure consistency and reliability, allowing you to enjoy your outdoor adventures with peace of mind.

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VEVOR 6-Inch Heavy Duty RV Leveling Block – 6,000 lb Capacity

This VEVOR leveling block stands 6 inches tall and supports up to 6,000 pounds, with a cylindrical design that increases the support area for stability on soft or uneven ground. It fits both round and square metal jack legs, as well as trailer support wheels, making it a versatile addition to your camping gear. The tough PP material provides a non-slip grip that keeps your jack securely in place.

Ideal for fifth-wheel trailers, camper trailers, and even as a motorcycle stand or stool, this block adapts to multiple uses. Its durable construction resists slipping and popping out in strong winds. For a compact, multi-purpose block that offers solid support, this VEVOR model is a practical choice.

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• Stable Support Anywhere: Enjoy a smooth camping experience. This RV jack block increases the support area, keeping your RV stable on uneven or soft ground. The taller cylindrical blocks adapt better to gravel, dips, and rough surfaces than thinner pads.
• Universal Design: Designed to fit both round and square metal jack legs, as well as trailer support wheels or insertable legs, our RV leveling block provides solid support. With a weight capacity of up to 6000 lbs (2722 kg) per block, they ensure your RV stays steady and secure, even on uneven ground, while preventing deformation. Ideal for your next adventure!
• Durable & Non-Slip: Made from tough PP material, this camper leveling block grips most surfaces, ensuring your jack stays securely in place without slipping or popping out in strong winds or on smooth ground. Whether you’re parked on snow, grass, sand, or gravel, you can camp with peace of mind.
• For Various Vehicles: Our RV leveling block is ideal for fifth-wheel trailers, camper trailers, and Class A & C RVs. Enjoy the stability and protection they provide, making your travels smoother and more secure.
• Versatile Use: This trailer jack block with a square column design are ready for all your adventures. Not only do they provide stable support for your RV, but they also double as seats, motorcycle stands, or step ladders.

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ROBLOCK 6-Inch Trailer Jack Block with Bag – Universal Fit

ROBLOCK’s 6-inch trailer jack block is built from high-performance polymer with anti-UV aging additives, resisting dirt, grime, and oil for years of rugged use. It supports nearly any tongue jack foot, wheel jack, 9-inch round fifth wheel hydraulic jack foot, or scissor stabilizer, eliminating nearly all wobble. The stackable design lets you adjust height easily, and the included bag makes carrying and storage simple.

Each block features a side hole and rope for convenient transport. Whether you’re leveling a travel trailer or a fifth wheel, this block provides a stable, wobble-free foundation. If you want a universal block that comes with a carry bag for easy portability, the ROBLOCK is a solid option.

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• Sturdy & Robust: Our RV trailer jack blocks are built with a high-performance polymer and added anti-UV aging additives to resist dirt, grime and oil for years of rugged use. G.V.W 40000 Lbs per block
• Widely Used: The trailer jack block supports nearly any tongue jack foot, wheel jacks, 9” round 5th wheels hydraulic jack foot or Scissor Stabilizer and more! ELIMINATES NEARLY ALL MOVEMENT AND SWAY in parked RV's and Trailers
• Adjustable Height: Each RV jack block features a stackable design, allowing you to easily adjust the height according to your needs. This flexibility ensures that you can achieve the perfect leveling for your camper, even on uneven surfaces
• Easy to Carry & Store: The hole on the side of the block and the rope are easy to carry, with storage bag is convenient to store and saving space
• Size & Service: About 6" tall, L:11.5", W:11.5". If you have any questions after purchase, please contact us at first, we will glad to help you solve the problem

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Buyer’s Guide: What to Consider

Choosing the right trailer jack block depends on your trailer’s weight, terrain, and storage needs. Here are key factors to consider before buying.

• Weight Capacity: Match the block's load rating to your trailer's tongue weight. Higher capacity offers more safety margin for heavy rigs.
• Material and Durability: Look for UV-resistant, weatherproof materials like recycled plastic or high-performance polymer to withstand outdoor conditions.
• Stability Features: Patented designs or larger footprints reduce wobble on uneven ground. Non-slip surfaces keep the jack securely in place.
• Stackability: Stackable blocks allow height adjustment for uneven terrain. Ensure the locking mechanism prevents shifting when stacked.
• Portability: Built-in handles, side holes, or included carry bags make transport and storage easier, especially for frequent travelers.

Conclusion

Selecting the best trailer jack block comes down to your specific needs. For maximum load capacity and stability, the OX BLOX is unbeatable. If you want a budget-friendly option, the VEVOR 6,000 lb block offers great value.

For extreme heavy-duty use, the KIKIRV 40,000 lb block is your best bet. The versatile VEVOR 6-inch block doubles as a stool, while the ROBLOCK with bag is perfect for portable use. Choose the one that fits your trailer and camping style.