Keep your RV slide-out room properly aligned and operating smoothly with the Lippert Components 375994 Infinite Pitch Arm Assembly. This 69-inch black arm is the correct OEM-specification replacement for Lippert Infinite slide-out systems, actively controlling the pitch and tilt angle of your slide room as it extends and retracts. If your slide room is racking, binding, dragging on the floor seal, or showing uneven gaps at the top or bottom edge, a worn or damaged pitch arm is a common culprit -- and this is the direct replacement part.
The Lippert Infinite slide-out mechanism uses a pitch arm assembly to regulate the angle at which the slide room travels in and out of the coach wall. Unlike basic rack-and-pinion or cable systems that rely purely on the slide tube rails, the Infinite system incorporates a dedicated pitch arm that actively manages room tilt throughout the full range of travel -- keeping the room square, the seals compressed evenly, and the floor transition smooth.
Over time, pivot points wear, hardware loosens, and the arm itself can bend or crack from road vibration and repeated cycling. A damaged pitch arm causes the slide room to rack side to side, drag on the floor seal, or create uneven gaps that allow water intrusion and air leaks. Replacing the arm with this Lippert OEM part restores factory-correct geometry and travel.
69-inch overall length matches factory specification for Infinite-equipped slide rooms requiring this arm size.
Engineered to Lippert factory tolerances -- ensures proper pitch angle throughout the full extend and retract cycle.
Factory black finish resists corrosion and matches Lippert Infinite system hardware for a clean, stock appearance.
Designed as a drop-in replacement -- uses existing mounting points with no cutting or custom fabrication required.
The pitch arm connects between the slide room frame and the coach structure, forming a mechanical linkage that controls the vertical angle (pitch) of the room during travel. As the slide room extends, the arm geometry causes the leading edge of the room floor to tip slightly downward, then level out as the room reaches full extension -- bridging the gap to the coach floor cleanly and maintaining a proper weatherseal compression all the way around the perimeter. Without a functional pitch arm, the room cannot achieve or maintain this controlled arc of travel.
Lippert produces Infinite pitch arms in multiple lengths to accommodate slide rooms of different widths and configurations. The 375994 is the 69-inch version. Measure your existing arm from pivot center to pivot center before ordering. Installing an incorrect arm length will result in improper pitch geometry, which can damage seals, slide hardware, or the room frame itself. If your existing arm is damaged and the length is unclear, contact Lippert Components technical support with your coach VIN for confirmation.
If you are performing a full pitch arm service, inspect and consider replacing related hardware at the same time: slide room seals, slide tube lubricant, pivot pins, and any worn bracket hardware. Lippert's service network and technical support line can cross-reference additional parts by your coach VIN to ensure complete compatibility across the entire Infinite slide system.