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Telescoping Carbon Fiber + Kevlar Mounting Arms with 20mm Connector Ends

SKU BMS-ExtArm558

Arm Length

Looking for total control over device positioning? Our extension mounting arms are the perfect solution!

These mounting arms extend from 8" to 10.5" or 10.5" to 15.5" in total length so you can dial in the perfect length depending on your vehicle, device holder and desired angle.

How does it work?

Simply twist the center collar to unlock the arm, extend or compress the arm to your desired length and twist the collar to lock it into place.

20mm Compatibility

This extendable mounting arm features dual 20mm aluminum connector ends making it perfectly compatible with any of our dash mounts, 20mm AMPS balls and device holders with 20mm ball mounts.

Strong & Lightweight

Our telescoping mounting arms feature carbon fiber + kevlar construction with aluminum connector ends. They provide a rock solid connection between your dash mount and your device holder.

Note: due to the presence of kevlar, the mounting arm has a subtle blue hue in direct light.

  • 5 stars: 71 (92%)
  • 4 stars: 3 (4%)
  • 3 stars: 2 (3%)
  • 2 stars: 1 (1%)
  • 1 star: 0 (0%)
G
George S.
Best thing ever

Very easy to use and very convenient as I like to adjust the distance on my phone to my liking

R
Robert Hardin
Solid as always

I was a little skeptical of this arm because it was adjustable. But honestly it makes no difference. It’s as solid as my single length arm. I would also suggest is you are un certain about the length of arm you need as I was, get this one. Then adjust it to your need. Thanks again Bullet Point, great products!

D
DB
Extendable Arm Pro's and Cons

Very strong and durable piece. A little bulky but offers greater flexibility for adjusting and positioning devices. Very robust! Would also be nice if it came in more colors in order to blend in with surrounding surfaces. This might help soften the bulky appearance if the arm could blend in with surrounding surfaces. Overall it's still a great piece!

v
vince difronzo
Works great for my application.

Works great for my wife. It makes access easier for her to reach her phone. especially on long trips.

R
Roland Dezentje
Great product

Love the telescoping feature. Was needed as the windshield is far forward.

R
Reel Coast Adventures
Works great for my application

Built my own marine multi-mount using BulletPoint Mounting Solutions parts — rock solid setup! 💪 Everything locks in tight and feels heavy-duty, even on the water. Super versatile and easy to customize. Highly recommend! ⚓️🚤

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D
Don Muise
bulletpoint extension

excellent product, used for passenger side of my truck and two in the rear for passengers with fast charge. would recommend to anyone, you wont be disappointed. Don

B
Brad L.
Long and strong

I have the 10.5" - 15.5" arms installed and they are perfect for my setup, my elbow never has to leave the armrest on my console.

B
Brett L
Haven't tested hard yet..

The arm seems to be stable and only comes loose a tiny bit sometimes.. but I've only used it on two pretty easy trails so far. I did read from others online that it takes a bit of re-tightening a few times to set. So we shall see. I'll try and remember to update after a few more rougher trails.

H
Hunter Peisel
LEO Use

I like the options this company has, the different set ups makes work so much easier with all the equipment I have.

J
John Chaman

I love it and look perfect

R
Robert P
Expanding Mounting Arm

This new expanding mounting arm is perfect for my application. I have a mounting arm for my cellphone that I leave in place and the other mounting arm for my Surface Pro I would take off because of the bulky look. Now with the extending arm I can leave the arm attached and shrink it in when not in use. My hats off to one that came up with this idea.

R
Randall

👌

J
Justin Lewis
Great items to have

I wanna start by saying everything i purchased through this company has been great and a product they stand behind I had one issue with the cup holder product but sent in a email no questions asked and had a replacement on the way less than 12 hours they stand on business here

J
Jeff Curtis
Solid idea, not solid in application

I purchased the extension to hold an 11” IPad. It supposed the weight as it should have, but I could not get the extension nut tight enough to prevent the IPad from rotating downward.

Hi there, thank you for your feedback. Some slight movement within the first 30 days is normal as the finish on the balls and inside the connector pieces wears down slightly. This break-in period is expected, and it's perfectly fine to tighten the connections and then gently adjust the arm as needed to help the finish settle.
Please be sure to use the F-it Tool to securely tighten the end connector.This tool is designed to ensure a firm and proper connection.

Please let us know if you need further assistance—we’re happy to help!

A
Alan

not a good choice for heavy items like a tablet. doesn't tighten down all that great so you have to keep spinning it to keep it straight.

S
Scott

Awesome product. Picked wrong clmap size

N
Noel Verdejo

These are the best spent around $160 so far for my 2026 tundra

R
Ramiro Chavez
Bulletpoint products

Well simple as to say fully recommended and satisfied 🏆👍🏻

D
Dan

Great product

M
Mark Tressler
great product

the arm work as it was design too

T
Thomas McKean
Flexibility

The ability to adjust the length is great in trying to setup how I want things arranged and whether it gets in the way of other things I have mounted.

R
Raul

Always great products!!

G
Gregory Bader
works better than expected

love the Telescoping Carbon Fiber + Kevlar Mounting Arms with 20mm Connector Ends goes in and out with no problem and locks in strong not moving when in use.

M
Matthew P Ruscetta
Telescoping 8-10.5”

Big fan of Bulletpoint Mounting, ended up getting the telescoping arm for the passenger side because the non telescoping arm was just a bit short and over time ended up falling apart because of my other phone/setup. Tried gluing it back in the cylinder but just kept falling out. The telescoping arm was perfect for that reason just to keep it off the dash a couple more inches. Would highly recommended these mounts and telescoping arm if it fits your needs.