Kohree RV Slide-Out Support Jacks, 4PC Flat-Top Stabilizers, 20-49 in Adjustable, 20,000 lb Capacity

Kohree RV Slide Out Support Jacks 4PCS are adjustable flat-top stabilizers that reduce slide-out shake and add uniform support for larger fifth wheels and Class A motorhomes.

When you open a slide-out on a larger RV, uneven support or a two-jack setup can leave the room vulnerable to sway, wind vibration, and structural stress. These Kohree four-piece slide-out support jacks feature a reinforced flat top, wide 20"–49" height range, and a high 20,000 lb rated capacity per set to give broader, more even support for heavy slide-outs. They are built to be used as stabilizers for slide-outs — not to lift the entire RV — and they install and adjust quickly using a socket and power drill.

How do these jacks reduce slide-out movement?

The Kohree 4PCS system distributes load across four support points instead of two, which minimizes bounce and lateral sway. The flat-top block sits solidly against the slide-out frame so vibration from wind or people moving inside is absorbed more effectively.

• Four-point support reduces shake up to approximately 70% versus basic two-jack setups.
• Flat top design avoids the need for separate wood blocks.
• Robust steel construction resists flex and maintains alignment under load.

What sizes and adjustment range are available?

Each Kohree jack adjusts from 20" to 49", making them useful for a wide range of RV floor heights and uneven campsite surfaces. The telescoping inner tube locks securely to maintain the chosen height while you use your slide-out.

• Height range: 20"–49" to suit many fifth wheels and Class A models.
• Telescoping adjustment with locking holes for stable positioning.
• Compact when collapsed for storage and transport.

How easy is installation and adjustment?

Kohree jacks are designed for fast deployment. A standard socket and a power drill speed up raising and lowering, which is faster than manual crank handles. Installation requires placing the flat top under the slide-out and adjusting to snug contact — no additional blocks required in most cases.

• Quick adjustment with a socket and power drill.
• Flat top eliminates stacking separate support blocks.
• Lightweight enough for one person to position while being heavy-duty in use.

Are these jacks safe and what can they support?

These jacks are engineered as slide-out stabilizers, not as primary lifting jacks for the entire vehicle. The full four-piece kit provides strong, even support to reduce movement and protect trim and mechanical components associated with slide-outs.

• Rated capacity appropriate for heavy slide-outs and large RV rooms.
• Built from high-strength steel for long-term durability.
• Design intended to stabilize slide-outs, not replace frame jacks or leveling systems.

Who is this for? Kohree RV Slide Out Support Jacks 4PCS are suited to full-time RVers, families, and owners of larger fifth wheels and Class A motorhomes who need dependable, fast-to-deploy support for one or more slide-outs. If you want to cut down on in-room vibration, protect slide-out mechanisms, and simplify on-site setup without stacking blocks, these adjustable flat-top stabilizers provide a practical, heavy-duty solution.