Keep your fifth wheel solid and level. The Lippert 191015 is a direct-replacement inner arm for the JT Strong Arm stabilizer kit (191023), restoring the rigid X-brace support system that reduces frame flex and sway when you are parked. Sold individually so you replace only the piece you need -- no buying a full kit when one arm is bent or worn.
The JT Strong Arm system is a popular aftermarket upgrade for fifth wheel owners who want to eliminate the rocking and shaking that standard corner jacks alone cannot control. The system works by creating diagonal bracing from the pin box area down to the corner jack feet, distributing load across the frame rather than concentrating it at four jack points.
Over time -- especially on rough roads or with heavy seasonal use -- the inner arm can become bent, cracked, or corroded. Lippert part 191015 is the correct factory-spec replacement so your Strong Arm kit performs exactly as designed.
Lightweight aluminum build keeps added weight minimal while resisting rust and corrosion in outdoor storage conditions.
Designed specifically for Lippert JT Strong Arm stabilizer kit 191023 -- no drilling, cutting, or modification required.
Purchase only the inner arm you need rather than replacing the entire stabilizer kit, saving cost and reducing waste.
Backed by Lippert's limited 1-year manufacturer warranty for defects in materials and workmanship.
The JT Strong Arm (kit 191023) is a scissor-style diagonal brace kit that attaches between a fifth wheel's corner stabilizer jacks and the frame/underbelly area. Each brace assembly uses an outer arm and an inner arm that telescope and lock together to create a rigid diagonal support. This X-brace configuration dramatically reduces the side-to-side and fore-aft sway that single-point jacks cannot prevent on their own.
The inner arm is the sliding, inner-diameter section of that telescoping brace -- the piece that adjusts to fit the distance between the jack foot and the frame attachment point and then locks in place. Replacing a damaged inner arm restores the full bracing capability of the system.
Replacing the inner arm is a straightforward task for a confident DIYer with basic hand tools:
This inner arm is designed for Lippert JT Strong Arm kit 191023 specifically. If you own a different Lippert or aftermarket stabilizer kit, verify your kit number before ordering. Strong Arm kits vary by RV frame width and jack spacing, and arm dimensions differ between kit variants.