Ergotron LX Arm Extension and Collar Kit - Matte Black [98-130-224]
Convert an existing LX arm to accommodate two, three or four monitors, resulting in a stacked multi-monitor configuration. This mounting kit can be easily attached to the pole of the desk mounting base. Recommended for use with the LX arm, tall pole. It is easy for you to add a second, third or fourth monitor to your LX desktop bracket to accommodate an additional monitor or laptop computer. The cables are routed under the arm through the cable management and therefore do not get in the way. Easy to use: simple installation and operation Patented technology for constant Kraftaufwand lift-and-pivot motion technology Has passed the Ergotron tests with 10,000 movement cycles, ensuring that the height adjustment will function without any problems for many years.
Convert an existing LX arm to accommodate two, three or four monitors, resulting in a stacked multi-monitor configuration. This mounting kit can be easily attached to the pole of the desk mounting base. Recommended for use with the LX arm, tall pole. It is easy for you to add a second, third or fourth monitor to your LX desktop bracket to accommodate an additional monitor or laptop computer. The cables are routed under the arm through the cable management and therefore do not get in the way. Easy to use: simple installation and operation Patented technology for constant Kraftaufwand lift-and-pivot motion technology Has passed the Ergotron tests with 10,000 movement cycles, ensuring that the height adjustment will function without any problems for many years.
Convert an existing LX arm to accommodate two, three or four monitors, resulting in a stacked multi-monitor configuration. This mounting kit can be easily attached to the pole of the desk mounting base. Recommended for use with the LX arm, tall pole. It is easy for you to add a second, third or fourth monitor to your LX desktop bracket to accommodate an additional monitor or laptop computer. The cables are routed under the arm through the cable management and therefore do not get in the way. Easy to use: simple installation and operation Patented technology for constant Kraftaufwand lift-and-pivot motion technology Has passed the Ergotron tests with 10,000 movement cycles, ensuring that the height adjustment will function without any problems for many years.
Convert an existing LX arm to accommodate two, three or four monitors, resulting in a stacked multi-monitor configuration. This mounting kit can be easily attached to the pole of the desk mounting base. Recommended for use with the LX arm, tall pole. It is easy for you to add a second, third or fourth monitor to your LX desktop bracket to accommodate an additional monitor or laptop computer. The cables are routed under the arm through the cable management and therefore do not get in the way. Easy to use: simple installation and operation Patented technology for constant Kraftaufwand lift-and-pivot motion technology Has passed the Ergotron tests with 10,000 movement cycles, ensuring that the height adjustment will function without any problems for many years.
in 18 offers
The lowest price for Ergotron LX Arm Extension and Collar Kit - Matte Black [98-130-224] right now is $167.20 at LWT, compared across 18 retailers.
The all-time low was $131.80 on 8 Sept 2026 — today's price is 27% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 15 Oct 2026.
Last updated at 15/10/2026 00:42:12
Ergotron 98-130-224 Additional LX Arm & Color Kit, Matte Black, 1 Monitor, 7.1-24.9 lbs (3.2-11.3 kg), VESA Compliant
Delivery $20.61
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ERGOTRON LX Dual Stacking Arm Extension and Colla
Delivery $16.50
Ergotron 98-130-224 LX Dual Stacking Arm Extension and Collar Kit Matte Black
Delivery $12.99
Ergotron Mounting Arm for Monitor, Notebook, LCD Display - Matte Black
Delivery between 26–28 Oct $15.99
Ergotron LX Dual Stacking Arm Extension and Collar Kit in Matte Black 98-130-224
Delivery $22
Ergotron Mounting Arm for Monitor, Notebook, LCD Display - Matte Black
Delivery $30
98-130-224 Lx Dual Stacking Arm Extension And Collar Kit (Matte Black) 98-130-224
Delivery between 19–22 Oct $15
[98-130-224] Ergotron LX DUAL STACKING ARM EXTENSION AND COLLAR KIT MATTE BLACK.
7-day returns
Ergotron Mounting Arm for Monitor, Notebook, LCD Display - Matte Black - Height Adjustable - 4 Display(s) Supported - 11.34 kg Load Capacity - 100 x
Delivery $7.95
Ergotron LX Arm Extension and Collar Kit - Matte Black
Delivery between Fri – Wed $12
originally posted on cdw.com
I'm using three arms on the extra tall pole. Two 27" side by side and the third 34" above the two. So far, couple weeks, they've stayed exactly where I put them and yet are easy to move around. I looked around and I tried a few cheaper models (not even attempting three just for two) that just didn't get it done. While more expensive than others, this one delivers. I'm more than happy with this product.
| Maximum Load | 25 lb |
| Weight Capacity | 25 lb |
| Durability | Passes 10,000-cycle test, Built for thousands of movements |
| Installation Location | Desk |
| Installation Type | Desk mount base attachment |
Ergotron 98-130-224 Additional LX Arm & Color Kit, Matte Black, 1 Monitor, 7.1-24.9 lbs (3.2-11.3 kg), VESA Compliant
Delivery $20.61
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
ERGOTRON LX Dual Stacking Arm Extension and Colla
Delivery $16.50
Ergotron 98-130-224 LX Dual Stacking Arm Extension and Collar Kit Matte Black
Delivery $12.99
Ergotron Mounting Arm for Monitor, Notebook, LCD Display - Matte Black
Delivery between 26–28 Oct $15.99
Ergotron LX Dual Stacking Arm Extension and Collar Kit in Matte Black 98-130-224
Delivery $22
I'm using three arms on the extra tall pole. Two 27" side by side and the third 34" above the two. So far, couple weeks, they've stayed exactly where I put them and yet are easy to move around. I looked around and I tried a few cheaper models (not even attempting three just for two) that just didn't get it done. While more expensive than others, this one delivers. I'm more than happy with this product.
| Maximum Load | 25 lb |
| Weight Capacity | 25 lb |
| Durability | Passes 10,000-cycle test, Built for thousands of movements |
| Installation Location | Desk |
| Installation Type | Desk mount base attachment |
