Camco FasTen RV Leveling Big Blocks - Nesting Stabilizer Jack Bases, 2-Pack with Twist-Lock Handle

Camco FasTen RV Leveling High-Gain Big Blocks (44539) are durable nesting bases that give stabilizer jack feet a larger, secure contact surface to stop sinking and increase RV stability.

When campsites have soft soil, uneven rock, or deep grooves, small jack feet can sink or tilt, leaving your RV wobbly. The Camco FasTen Big Blocks are engineered to be placed beneath stabilizer jack feet to spread weight over a larger area and create a steady, level foundation. Constructed for repeated use and designed to nest together for compact storage, these bases simplify stabilization and free up your regular camper leveling blocks for other tasks.

How do these Big Blocks improve stabilizer jack performance?

By increasing the surface area under the jack foot, the Big Blocks reduce ground pressure and prevent the jack from digging in. That means fewer adjustments, less chance of tilting, and a more secure campsite setup. The block tops accept square 2x2 FasTen Leveling Blocks and many other square blocks, letting you stack or combine options for the exact height and support you need.

• Large footprint spreads load to avoid sinking on soft ground.
• Top recess fits 2x2 FasTen blocks and compatible square blocks.
• Works alone or with stacked leveling blocks for added height.
• Durable material resists cracking under repeated weight cycles.

How easy is it to store and transport the Camco FasTen Big Blocks?

The blocks nest together to occupy minimal space in your storage bay, and an integrated carry handle twists to lock the pair for carrying. That compact design makes them convenient for RVers who need reliable gear without bulky, awkward shapes in their compartments or on roof racks. They’re lightweight enough to load by hand yet sturdy enough to handle heavy loads.

• Nesting halves save space in storage areas and cargo bays.
• Twist-lock carry handle secures blocks for transport.
• Pair design keeps two-block sets together for quick access.

Will these work with the leveling gear I already own?

Camco made the FasTen Big Blocks to be compatible with the brand’s FasTen Stabilizer Jack Pads and FasTen Large Jack Pads, and the top recess accepts common square leveling blocks from other manufacturers. That interoperability means you can mix and match with your existing 2x2 blocks or use them as a stable base underneath larger pads for added footprint and stability.

• Compatible with FasTen Stabilizer Jack Pads and Large Jack Pads.
• Top surface holds 2x2 FasTen leveling blocks and many square blocks.
• Works as a standalone base or part of a stacked leveling system.

How durable are these bases and what load can they handle?

The Big Blocks are built for repeated outdoor use and to resist cracking under load, offering a reliable platform for stabilizer jacks across many trips. While exact weight tolerance varies with ground conditions and pad placement, the construction is engineered to support typical RV stabilizer jack loads without deformation when used correctly.

• Rugged molded design resists wear and stress from repeated use.
• Engineered to maintain shape under standard RV stabilizer loads.
• Simple maintenance: rinse off mud and debris for long life.

Who is this for? The Camco FasTen RV Leveling High-Gain Big Blocks are aimed at RV owners who camp on soft soil, gravel, or uneven surfaces and need a dependable base for stabilizer jacks. They suit full-time RVers, weekend campers, and anyone who wants to streamline their leveling setup by keeping small leveling blocks free for other uses while providing much larger, secure contact points under jack feet. If you want compact, stackable stabilization gear that integrates with existing FasTen and many square leveling blocks, these nesting Big Blocks are a practical, travel-ready choice.