Ergotron LX Two-Stop Rotational Control Kit - Monitor Motion Stop

In this review the Ergotron LX Two-Stop Rotational Control Kit is judged as a targeted, practical add-on for people who already own an LX series desk arm and want predictable, repeatable arm positioning. The single biggest reason to buy is simple: it adds an adjustable rotation stop that gives a reliable home position and prevents monitor arms from swinging into walls, panels or dividers. Installation is straightforward and the anodized silver finish blends with most workstations, making it a sensible upgrade for shared desks or tightly arranged setups.

Key Features

• Adjustable rotation stop: Lets users control the range of motion so monitor arms do not hit walls or cubicle panels.
• Simple installation: Includes dual rotation stop collar, two stop posts, set screws and an adjustment tool so attachment to the 35mm pole is quick and secure.
• Customized motion: Establishes a repeatable home position for easy resetting after projects or when multiple users share a workstation.
• Streamlined design: Anodized silver finish provides a low-profile, professional look that matches LX desk arms and most office aesthetics.
• Durable construction: Built to withstand everyday wear-and-tear and backed by a long-standing manufacturer warranty and support.

Who It's For

The kit is ideal for office professionals, shared workspace managers and home office users who want to limit monitor arm travel to protect walls or maintain a consistent monitor position. It particularly benefits anyone using LX Desk Arms, LX Dual Direct Arms or LX Dual Stacking Arms on narrow desks or next to partitioned panels.

Those who should look elsewhere include buyers who do not own a compatible LX pole or who want a full new monitor arm; this kit is an add-on and does not replace or provide mounting hardware for non-LX systems.

Pros & Cons

Pros

• Provides precise motion control to prevent collisions with walls and dividers.
• Comes with all small parts and a tool for straightforward attachment to the 35mm pole.
• Matches LX arms with an anodized silver finish for a coordinated workspace aesthetic.
• Designed and tested for durability and supported by the brand's long-term warranty and technical help.

Cons

• Works only with compatible LX series poles and arms, so it is not a universal solution.

Specifications

Product type	Rotational control kit for LX desk monitor arms
Compatibility	For LX Desk Arm, LX Dual Direct Arm and LX Dual Stacking Arm
Pole diameter	35mm
Finish	Anodized silver
Included hardware	Dual rotation stop collar, two stop posts, set screws and adjustment tool
Primary benefit	Adjustable rotation stop to control range of motion and set a home position

Our Verdict

The Ergotron LX Two-Stop Rotational Control Kit is a compact, well-engineered add-on for users who need predictable arm positioning and protection from collisions. It is good value for current LX arm owners who want an easy install and durable, adjustable motion control that keeps monitors in a repeatable home position.

Frequently Asked Questions

Will this fit my existing LX arm?
Yes, it is designed to attach securely to the standard 35mm pole used on LX Desk Arms, LX Dual Direct Arms and LX Dual Stacking Arms.

What comes in the kit?
The kit includes a dual rotation stop collar, two stop posts, set screws and an adjustment tool for installation.

Can it prevent damage to walls?
Yes, by limiting arm rotation the kit prevents monitor extension arms from contacting walls, desk panels or dividers.