7 Best Durable Stabilizer Mounts For Fifth Wheel Stability RVers Swear By

You’ve just pulled into the perfect spot, unhitched, and leveled your fifth wheel for a relaxing week. But as soon as someone walks from the kitchen to the living room, the whole rig sways like a ship at sea. This constant, subtle motion is one of the biggest annoyances of fifth wheel living, turning your solid-feeling home into a wobbly platform. Achieving true stability isn’t about finding one magic bullet; it’s about understanding the different types of movement and strategically adding support where it matters most.

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Understanding Fifth Wheel Stabilizer Systems

The wobble in your fifth wheel comes from three main sources: the landing gear, the suspension, and the tires. Even when your jacks are down, the long, unbraced legs of the landing gear allow for side-to-side and front-to-back movement. Your suspension and tires, designed to absorb bumps on the road, continue to flex and compress with every shift in weight inside the RV.

Think of the problem as a three-headed beast. You have side-to-side sway, front-to-back rocking, and up-and-down bounce. A king pin tripod might help with the bounce in the overhang, but it does nothing for the side-to-side sway originating from the landing gear. Likewise, tire chocks stop the tires from rolling but don’t address the flex in the jack legs.

The best approach is a layered one. You need to address the tires, the front landing gear, and sometimes the rear stabilizers. The most effective systems create rigid triangles—the strongest shape in engineering—to eliminate play and lock your frame solidly in place. Forget looking for a single product; start thinking about building a complete system.

JT’s Strong Arm: The Ultimate Wobble Stopper

If you ask seasoned RVers what the gold standard for stability is, you’ll hear "JT’s Strong Arm" over and over again. This isn’t just a single support; it’s a complete system of telescoping steel tubes that bolt directly to your fifth wheel’s frame and landing gear. The design is simple but brilliant.

The system works by creating a series of triangulated braces. Two bars attach to each front landing gear leg, one pointing forward and one pointing to the side. These bars lock in place with T-handles once you’re set up, effectively connecting the legs to the frame and to each other. This triangulation makes it nearly impossible for the landing gear to shift, eliminating the vast majority of both side-to-side and front-to-back movement.

The installation is permanent, meaning there’s nothing extra to store or set up each time you park. You just lower your jacks and tighten the T-handles. While the installation is more involved than a simple tripod, the result is a rock-solid feeling that other systems struggle to match. It’s an investment, but one that pays off every time you walk through your rig without causing an earthquake.

SteadyFast System: Top-Tier Frame-Mounted Brace

The SteadyFast System is the primary competitor to JT’s Strong Arm, and it accomplishes the same goal with a slightly different design philosophy. Where JT’s uses multiple bars with individual T-handles, SteadyFast simplifies the process with just three braces and three handles to lock down your entire rig. Two braces anchor the front landing gear, and a third secures the rear of the RV.

The core principle is identical: triangulation. The braces rigidly connect your landing gear to the frame, preventing movement. The key difference is user experience. With only three points to tighten, setting up and breaking down is incredibly fast. Users simply pivot the braces into position, lock them down, and they’re done.

Choosing between SteadyFast and JT’s Strong Arm often comes down to personal preference. Both are exceptionally effective at removing wobble. Some prefer the simplicity and speed of SteadyFast’s three-point system, while others feel the multiple connection points of the JT’s system offer more robust bracing. You can’t go wrong with either, but if you value quick, simple setup, SteadyFast has a clear edge.

Ultra-Fab King Pin Tripod for Front-End Firmness

A king pin tripod is often the first stabilizer new fifth wheel owners buy, and for good reason. It’s an intuitive solution that directly addresses the noticeable bounce in the front overhang of the rig. The Ultra-Fab King Pin Tripod is a classic example of this design, providing a solid, adjustable third point of contact right under the king pin.

This device is fantastic at its specific job: reducing the up-and-down motion felt in the bedroom area. By supporting the heavy front end, it takes a lot of the vertical flex out of the frame. It’s incredibly easy to set up—just position it under the pin, adjust the height, and secure the chain. No permanent modifications are needed.

However, a tripod alone will not solve all your stability problems. It does very little to stop side-to-side sway, which originates from the landing gear legs. Think of it as a specialized tool, not a complete solution. It’s an excellent addition to a frame-mounted system like JT’s or SteadyFast, but if you can only choose one, a frame brace will give you more comprehensive stability.

BAL X-Chock: Essential Tire-Locking Support

Don’t underestimate the amount of movement that comes from your tires. Even when you use standard wheel chocks, the tires themselves can still flex and shift, causing a subtle but persistent front-to-back rocking motion. The BAL X-Chock is the definitive solution to this problem.

The X-Chock is a scissor-style jack that fits between the tires on a tandem-axle setup. Using the included ratchet, you expand the chock until it applies firm pressure against both tires, effectively locking them together. This prevents them from rotating or shifting in either direction. The difference is immediate and significant.

This is a foundational piece of the stability puzzle. In fact, I’d argue it’s the first thing every fifth wheel owner should buy. It’s relatively inexpensive, takes seconds to install, and addresses a source of movement that frame braces and tripods can’t touch. Using X-Chocks in combination with a frame-mounted system creates a truly locked-down and stable living space.

MORryde X-Brace: A Simple, Effective Solution

You might already have a capable stabilizer system and not even know it. Many modern fifth wheels come from the factory with MORryde stabilization components, most commonly a cross-brace that connects the two front landing gear legs. This simple "X-Brace" provides a significant amount of lateral support.

The MORryde system works by adding triangulation between the landing gear legs, much like the aftermarket systems. While perhaps not as comprehensive as a full JT’s or SteadyFast installation that also ties directly to the frame, it’s a huge improvement over unbraced legs. It effectively combats the side-to-side sway that makes a rig feel top-heavy.

If your fifth wheel has this system, you’re already ahead of the game. For many, the factory-installed MORryde brace combined with a set of X-Chocks is more than enough to achieve comfortable stability. If you still feel excess movement, you can always supplement it with a king pin tripod or upgrade to a more robust frame-mounted system later.

Camco Eaz-Lift Tripod: A Popular Go-To for RVers

The Camco Eaz-Lift Tripod is another heavyweight in the world of king pin stabilizers. Functionally, it’s very similar to the Ultra-Fab model, offering an adjustable support that fits directly under your fifth wheel’s king pin to minimize front-end bounce. Its popularity stems from its wide availability, competitive price, and trusted brand name.

Like all tripods, the Eaz-Lift excels at taming the "diving board" effect in the bedroom overhang. If your main complaint is a bouncy floor when someone is walking around in the front of the rig, this is a quick and effective fix. It’s a simple, no-install solution that provides immediate, noticeable results for that specific problem.

The tradeoff is the same as any tripod: it requires storage space and setup/teardown at every campsite. It also only addresses one type of movement. But for RVers who are primarily bothered by front-end bounce or who don’t want to permanently modify their rig, the Camco Eaz-Lift is a reliable and budget-friendly choice that gets the job done.

Valterra Universal Stabilizer: Versatile Support

Sometimes, you have a very specific wobble that a larger system doesn’t quite fix. Maybe it’s a bouncy floor under a heavy slide-out, or a slight wiggle right at the entry steps. This is where a simple, versatile tool like the Valterra Universal Stabilizer shines.

This is essentially a heavy-duty, adjustable jack stand. You can place it anywhere under your frame or slide-out to add a point of contact with the ground. It requires no installation and can be moved to target different problem areas. Have a long slide-out that flexes when you walk on it? Place one or two of these underneath to firm it up.

This is not a primary stabilization system. It won’t stop side-to-side sway on its own. Instead, think of it as a surgical tool for stability. It’s perfect for supplementing a larger system by adding support exactly where you need it most. For its low cost and versatility, having one in your storage bay is a smart move for tackling those last little bits of annoying movement.

Ultimately, creating a rock-solid fifth wheel isn’t about buying the single "best" product, but about building the right system for your rig. Start by identifying your primary source of movement—is it side-to-side sway, front-end bounce, or a general rocking? From there, you can layer solutions like X-Chocks for the tires, a frame brace for the landing gear, and a tripod for the overhang until your rolling home feels as firm as one built on a foundation.