USA-Made Trailer Jack Blocks Up to 18,000 lbs - Heavy Duty RV

In this review the focus is on whether these USA-made trailer jack blocks deliver real stability for RV and trailer owners. The bottom line: they are built to last and best for owners who need heavy-duty, stackable support for jacks, stabilizers, and tongue stands. The reviewer found they provide a secure footing on soft ground or gravel and appreciate that they are made from recycled, UV resistant plastic and rated up to 18,000 lbs with proper flex pads, making them a reliable choice for long trips and seasonal storage.

Key Features

• Made in the USA: Manufactured from recycled plastic domestically for consistent material quality and supply chain transparency.
• High load rating: Rated up to 18,000 lbs when paired with recommended flex pads, offering confidence under heavy tongue loads and stabilizers.
• Durable construction: Forged plastic design rather than injection molding gives extra strength and resistance to cracking under repeated heavy use.
• UV resistant: Built to resist sun degradation so they hold up outdoors without rapid fading or brittle failure.
• Stackable versatility: Blocks stack easily to achieve different heights so users can adapt to uneven terrain or different jack heights.
• Generous footprint: At 10 x 10 x 4 in each block, they stabilize foot plates, jacks, and stands with a wide contact area to reduce sinking.

Who It's For

These jack blocks are ideal for RV owners, travel trailer and 5th wheel users, and anyone who needs reliable leveling and anti-sink support for tongue jacks and stabilizers. They work well for weekend campers and long-term parkers who want a durable, reusable solution that resists UV and rough weather.

They are less appropriate for people looking for the cheapest short-term option or for those who require integrated soft flex pads (the 18,000 lb rating assumes use with compatible flex pads). Buyers who need very compact or specialized chocks for small pop-up campers may also prefer a smaller or lower-cost alternative.

Pros & Cons

Pros

• Sturdy, heavy-duty feel that customers describe as very durable and stable under heavy loads.
• Made from recycled material and UV resistant, so they stand up to outdoor use without rapid degradation.
• Large footprint and stackable design allow flexible height adjustments and prevent jacks from sinking into soft ground.

Cons

• Higher price point noted by some customers compared with basic blocks, though many find the build quality worth it.
• Surface texture can vary due to the forged plastic process, which is cosmetic but may surprise buyers expecting uniform finish.

Specifications

Brand	bullke
Country of manufacture	USA
Material	Recycled forged plastic (UV resistant)
Rated capacity	Up to 18,000 lbs (with flex pads)
Dimensions	10 x 10 x 4 in
Set size	4 blocks

Our Verdict

For owners of travel trailers, 5th wheels, and campers who prioritize durability and a high load capacity, these USA-made jack blocks are a smart investment. The combination of a forged plastic build, UV resistance, and a large, stackable design makes them dependable for preventing sinkage and stabilizing jacks. They represent good value for those who need lasting performance rather than the lowest upfront cost.

Frequently Asked Questions

Are these blocks made in the USA?
Yes. They are manufactured in the USA from recycled plastic.

What is the weight rating?
They are rated up to 18,000 lbs when used with compatible flex pads for proper load distribution.

Can they be stacked for extra height?
Yes. The blocks are designed to stack so you can adjust height for uneven terrain or different jack needs.