Sulythw RV Slide-Out Support Jacks — Adjustable 16–36 in, 5000 lb Capacity, Zinc-Coated

Sulythw RV Slide Out Support Jacks are adjustable stabilizer jacks that reduce slide-out sway and add structural support for travel trailers, fifth-wheels, and campers.

When parked, slide-outs can wobble, creak, or shift under weight and wind. These Sulythw slide out supports are engineered to clamp under a slide-out frame and provide a stable, corrosion-resistant support point that’s quick to install. Built from reinforced steel with a zinc powder coat and an aluminum gearbox, the jacks balance durability with portable convenience for camping and travel use.

How do these jacks stop slide-out movement?

These supports lock into place beneath the slide-out frame to transfer side loads into the ground rather than the RV structure. They use a u-shaped top that cradles most slide-out rails and tether pins to keep the unit from slipping out of position.

• U-shaped top fits common slide-out frame profiles for secure contact
• Tether pins hold the jack to the slide-out, preventing lateral movement
• 5000 lb capacity per jack distributes stress away from the RV wall
• Zinc-coated steel resists rust for reliable outdoor performance

Can I raise or lower the jack quickly?

Sulythw jacks offer two lift methods so you can choose speed or convenience depending on what tools you have. Use an electric drill with the gearbox for fast deployment, or operate the included side-wind handle when a drill isn’t available.

• Drill-ready gearbox for rapid extension and retraction
• Manual side-wind handle for tool-free adjustments on the road
• Adjustable range from 16" to 36" to match many slide-out heights
• Tether pins included for stable, repeatable positioning

What materials and construction make these jacks long-lasting?

The jacks combine thick steel bodywork with an aluminum gearbox to resist wear and weather. A durable zinc powder-coat finish helps prevent corrosion and reduces maintenance, making them suitable for seasonal or full-time RV use.

• Thick steel construction for load-bearing strength
• Aluminum gearbox for improved durability and smoother operation
• Zinc powder-coat protects against rust and salt exposure
• Swivel nuts added to the design to increase stability by about 30%

How do I use these jacks with different RV types and surfaces?

Sulythw supports are designed to work with a wide range of towables and campers but perform best on a level base. Use wooden or concrete leveling blocks beneath the foot to prevent sinking and to create a secure contact point on soft ground.

• Compatible with travel trailers, fifth-wheels, pop-up campers, utility trailers, and ATVs
• Use leveling blocks or pads under the foot for soft or uneven surfaces
• Not intended to hold the full weight of the vehicle — meant to stabilize slide-outs
• Includes tether pins to secure the jack to the slide-out frame

Who is this for? If you own a travel trailer, fifth-wheel, or camper with a slide-out and you want to reduce bounce, creak, or feeling of instability while parked, these Sulythw slide out support jacks are a practical upgrade. They suit campers who need a combination of fast setup (drill operation), a manual backup, and rugged materials for seasonal and long-term outdoor use. Installers, frequent travelers, and owners who often park on variable ground will appreciate the adjustable range, corrosion resistance, and included safety pins. Sulythw also backs the product with lifetime after-sale support for replacement parts, making it a low-risk addition to your RV toolkit.