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K40 Magnet CB Antenna Best Seller


  • The ease of a magnetic installation without sacrificing performance at 58" tall
  • Conveniently remove antenna from the base in seconds when entering low clearance areas 
  • All-in-one antenna includes magnet mount, whip antenna & coax
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What’s more important: top-notch CB performance with a long antenna or a garage kept vehicle that saves you from a fate of scrapping windshield ice in -20 temps? Fortunately, you don’t have to decide with the K40 Magnet Mount antenna. Thanks to the revolutionary twist-to-remove feature that separates your antenna from the base, you can install or remove the 58” antenna in seconds while the coax and mounting base remain on your rig. This antenna also affords you the freedom to put the pedal to the metal, as the 120 lb. pull magnet is tough enough to stay put at highway speeds.

Model / SKU:K40M + K40
Recommended for:Car, van, SUV and pick-up truck owners who want a high-performance CB antenna and the ease of a magnetic installation. The twist-to-remove feature makes this antenna a great option for people who frequently enter low-clearance areas. The whip and coil can be easily stored away while the coax and mount remain in place.
Notable Features:Strong Transmit/Receive Performance, Versatile Mounting Options, Twist-to-Remove Base
Compatible with:
All CB radios. The magnet mounts to any flat, metallic surface. You can also remove the magnet adapter to install the K40 antenna as a trunk-lip antenna, or to permanently mount it to your vehicle's roof (drilling required).
Antenna Length(s):
Antenna Color(s):
Approximate Range:
Range(s) provided are for comparison purposes only and are subject to numerous installation and environmental variables. For more detailed information, please see our reference article on CB Antenna Range Approximation.

  • Approximately 5 to 7 miles
Product Includes:58" K40 CB antenna
K40 magnet mount adapter
18' of shielded coax cable

This magnet mount antenna installs more easily and performs better than similar antennas. Unlike other antennas, the K40 antenna can be installed using the included magnetic mount accessory, the standard trunk lip or even as a permanently mounted rooftop antenna! So, if you decide to change the installation type after purchase, not a problem -- this antenna will allow you to do all three!

K40 guarantees its magnet mount antenna will work better than your current similar antenna or it will refund your money! (See manufacturer's site for full details.)

  • Magnetic base for easy installation on all flat vehicle surfaces
  • Can also be installed permanently on roof or with included trunk-lip adapter
  • 120-lb. pull magnet strength
  • 57 1/4", 17-7 stainless steel whip antenna
  • Includes 18' custom-made RG-58A/U 95%
  • Shielded coax, stranded to prevent breakage
  • Exclusive METLPLAS construction for superior performance
  • Unique capacitor for consistent SWR across all 40 channels
  • Base rotates 30 degrees for proper vertical polarization
  • Special radiused tip to dissipate static
  • Whip retracts 2-1/4" into coil for super easy tuning
  • Isolation chamber reduces static damping
  • Quarter-turn release makes for easy removal of coil and whip
  • Made in the U.S.A.
  • Five-year warranty


Customer Reviews

Based on 40 reviews

K-40 antenna is the finest in the land
....I wouldn't trade it for love money

Howard Lambert
Not quite the old K40

Used to sell these way back when I had a CB radio shop back in the mid to late 1970's. Figured I'd go back to what I knew when I installed a unit in my grandson's truck. This is not quite on par to the old ones. The chrome metal plating is not the same quality and the coil is not as perfect as it once was. Mated this up to an old K-40 magnetic mount that i had from the 1980's and it didn't fit as well. I see the manufacturer is also a different location. Works but a bit disappointed.

Marcus Dorado
K40 Magnet CB Antenna

Love this antenna just wish it still came with the weather cap like it did back in the day

Barry Rogers

No problems with my order. Product was delivered and everything appears as in the pictures on the web. Will do business with RIGHT CHANNEL again.

Tonda Nigrelli
K40 Magnet CB Antenna

I've used these antennas for 30 years and like the way they perform. I also like the ease of removing the antenna.