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  1. Trailer Brakes
  2. Dexter
  3. Electric Drum Brakes
  4. 9000 lbs Axle
  5. 10000 lbs Axle
  6. 12-1/4 x 3-3/8 Inch Drum
Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K
Dexter

Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K

Part Number: 23-450-451
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$734.09
Trailer Brakes
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These brakes automatically adjust as you tow so you don't have to crawl around on the ground to do it manually. 12-1/4" x 3-3/8" Assemblies fit 16" or larger wheels. Backing plate has a 7-bolt pattern. Made in the USA. Great Prices for the best trailer brakes from Dexter. Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K part number 23-450-451 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Dexter Trailer Brakes - 23-450-451

  • Electric Drum Brakes
  • 9000 lbs Axle
  • 10000 lbs Axle
  • 12-1/4 x 3-3/8 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Standard Grade
  • Self Adjust
  • Dexter

These brakes automatically adjust as you tow so you don't have to crawl around on the ground to do it manually. 12-1/4" x 3-3/8" Assemblies fit 16" or larger wheels. Backing plate has a 7-bolt pattern. Made in the USA.


Features:

  • Self-adjusting brakes let you maintain optimal braking power at all times
    • Ensures reliable contact between the brake shoes and drums
    • Prevents uneven wear on brake shoes
    • Allows for the perfect setting thanks to the fine-tooth star gear
  • Easier to install and gives you more control than hydraulic brakes
    • Requires only an electric brake controller (sold separately) - no actuator or hydraulic lines needed
  • Long-lasting brake pads offer excellent braking torque
    • Fully bonded to shoes for more consistent braking compared to riveted pads
    • Tapered edges help minimize stuttering and brake lockup
  • Durable magnets ensure consistent braking power
    • Encased in a stamped steel housing
  • Left-hand (driver's-side) and right-hand (passenger's-side) brake assemblies included
    • Mounting bolts and hardware sold separately
  • CSA certification ensures quality
  • Made in the USA


Specs:

  • Application: most standard hub-and-drum assemblies, including etrailer, Dexter, and Lippert (LCI)
  • Dimensions: 12-1/4" diameter x 3-3/8" wide
  • Mounting flange bolt pattern: 7 bolt
  • Wheel size: 16" or larger
  • Axle rating: 9,000 lbs - 10,000 lbs
  • Limited 5-year warranty


Quick Tip: There's really not a whole lot to getting new drum brakes. If you've confirmed that all of the specs listed above line up with what you need for your trailer, you can be pretty sure these will work for you.


High-Quality Brake Pads

Riveted brake pads will always give you a screeching reminder to replace your brake shoes. That's because the rivets will scrape against your drum as the friction material wears down. You won't have that noisy problem with bonded brake pads. You'll also get a little more friction pad contact because there aren't any cutouts for rivets. And more friction means more stopping power.


A close-up shot of a drum brake shows a tapered brake pad.

These pads are also tapered, which should help to prevent any broken, crumbly bits of material from rotating inside the drum as the pads wear over time. Brakes without these tapers are more likely to create a jarring braking experience that could cause the brakes to stutter and lock up.


Self-Adjusting Brakes Don't Require Routine Maintenance

With standard electric brake assemblies, you need to manually adjust them every now and then to make sure you're getting the shortest stopping distance every time you tow.


A trailer drum brake with a red callout shows the location of a tension cable and pulley on a self-adjusting trailer brake.

With self-adjusting brakes, though, you'll always have peak stopping power - simple as that! As the brake pads wear over time, a tensioning cable will automatically keep the pads in alignment so they'll consistently make contact with your drum when you brake. You won't have to do tedious manual adjustments anymore.


Thoroughly Tested for Safety

Dexter invests a lot of resources to ensure that these brakes meet the requirements for certification set by the Canadian Standards Association (CSA). Basically, a CSA certification tells you that these trailer brakes are well built and safe for use on the road.


How to Break In New Brakes

Once you get these brakes installed, you'll need to break them in. First, find a long stretch of road or a big, empty parking lot. Once you're there, set your brake controller to its maximum setting and get moving. Speed up to about 40 mph and brake to slow to about 20 mph. Repeat this 15-30 times. The goal is to get the brake shoes and magnet properly seated into your drum. You'll know you've done that when it feels less jerky (and more consistent) each time you apply the brakes.


Note: The brakes will be very hot after doing this, so after every 10 stops you'll want to wait about 10 minutes to let the brakes cool off before continuing. If you don't, you might cook and crack the pad material.



23-450 Dexter Electric Brake Assembly - LH - Driver Side - 12-1/4" x 3-3/8" - Self-Adjusting - 9,000 lbs to 10,000 lbs

23-451 Dexter Electric Brake Assembly - RH - Passenger Side - 12-1/4" x 3-3/8" - Self-Adjusting - 9,000 lbs to 10,000 lbs





Customer Satisfaction Score:


Customer Reviews

Dexter Nev-R-Adjust Electric Trailer Brakes - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K - 23-450-451

Average Customer Rating:  4.8 out of 5 stars   (28 Customer Reviews)

These brakes automatically adjust as you tow so you don't have to crawl around on the ground to do it manually. 12-1/4" x 3-3/8" Assemblies fit 16" or larger wheels. Backing plate has a 7-bolt pattern. Made in the USA.

by:

Exact fit for Dexter d1012 axle. Thank you etrailer for your research in knowing what I needed!



by:

Items arrived early and in good condition and was exactly what I needed



by:

Product was exactly what I needed and arrived on time



by:

My name is Albert, I recently ordered a set of electronic brakes for my trailer(2 10,000 lbs axles). The product and service was outstanding. Greg was the representative I dealt with he was very patient, helpful and supportive as this process was new to me. As a result of such helpful service the next few days I ordered all new bearings and seals for my axles. I consider the company great to work with in getting you what you need and getting it right the first time



by:

Etrailer was very easy to work with. I changed my order and then changed it back and staff was friendly and helpful everytime I called. Packages were on back order and I was notified of how long and product was here right when they said it would be.



by:

Customer service is always spot on! Be aware that this kit does not come with new hardware (bolts & nuts) and it does not come with a backer plate. Make sure you save the old stuff.



by:

Very responsive and great service.



by:

great service, fast shipping... thank y ou!!



by:

Quinn was Awsome,I had an situation,many thing had to come together,he pulled it off for me,great addition to the etrailer team,thanks again



by:

Fast shipping and great customer service will definitely be ordering my parts through them from now on



by:

Didn’t install product yet but e trailer delivered complete trailer order 1 day early and it’s complete will install tomorrow. Thanks e trailer and staff great job



by:

Perfect fit



by:

AWESOME customer service and fast delivery of products!! Thank you! Will be doing business with you again!!!



by:

exactly what i was looking for came on time



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Received early. Thanks



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Arrived faster than what they said. Great service



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Perfect fit



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Extremely pleased’n



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See what our Experts say about this Dexter Trailer Brakes

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    The Dexter Electric Brake Kit # 23-450-451 are the brakes you will need for your 2019 Big Tex 22GN with the 10,000lb Dexter axles. These are sold per axle so you will need 2 sets to replace all 4 of your brake assemblies. They are also sold individually as the Left # 23-450 and Right # 23-451.
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    It is completely normal for brakes to get warm when towing. Especially if you are doing a lot of braking, heat is natural. Now if the brake pad is falling apart, that is something you will want to address. Having pieces of brake shoe inside the drum could definitely cause excess friction/heat. You may still get decent braking power, but less brake pad = less braking power. Also I would be concerned that you may continue to lose pieces of the brake shoe over time. At this point I recommend...
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    The Dexter Electric Trailer Brake Assembly # 23-451 being the part number 023-451-00 that you referenced is a right side brake assembly. The Dexter Electric Trailer Brake Assembly # 23-450 is the matching left side brake assembly. This is available as a kit # 23-450-451 since I always recommend changing brakes as a set. We have the etrailer Electric Trailer Brake Kit # AKEBRK-10 which will can also be used. These are the same 12-1/4" x 3-3/8" brakes pads as the Dexter brand and they are...
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    If you can measure the width of your current brake assembly pads I can get you the correct brake assembly set for your Dexter 10,000 lb axles. If the pads are 3-3/8 inches wide you'd want the part # 23-450-451 or if they are 4 inches wide you'd want the part # 23-438-439. I tried looking up the numbers on the tag you sent a picture of and was not able to find anything.
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  • Electirc Brake Kit AKEBRK-8 Dimensions and Slipper Springs for 9,000 Pound Axle
    The measurements for the mounting holes on the # AKEBRK-8 are 3-5/8" across left to right on center and 3-7/16" top to bottom on center. The diameter of the pilot hole is 3-3/4", and the overall dimensions are 12-1/4" diameter x 3-3/8" wide. The axle rating for these trailer brakes is 8,000 lbs. When picking out the correct brake assemblies for your trailer you want to measure the inner diameter of your hub/drums and the depth of the drums. This information will allow you to find the...
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  • Will Electric Brake Assemblies Work Without A Magnet
    If you're saying that one of the wire clips isn't there but the magnet for your brake assembly # 23-450-451 is still in place then yes, the brake assembly with still work. If you're saying there's no longer a magnet at all then no, the brake assembly will not work. When your brake controller sends the signal back to brake assembly it energizes the magnet clamping it onto the hub and expanding the brake shoes so that they make contact with the drum to slow the trailer down. If you're needing...
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    We have drum brake assemblies for your 10K Dexter axles. If you want the electric assemblies, we have the Dexter Electric Brake Kit - Self-Adjusting - 12-1/4" - Left/Right Hand Assemblies - 9K to 10K # 23-450-451 if your hubs are 12-1/4 by 3-3/8 inches. If your hubs are the 4 inch width, then you will use the Dexter Electric Trailer Brake Kit # 23-438-439. If you have hydraulic brakes we have the following: # 23-410-411 for 12-1/4 x 3-3/8 inch drum # K23-524-00-2 for 12-1/4 x 3-1/2...
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  • How To Adjust Brakes When The Shoes Are Too Far Apart To Get A Drum Back On
    The Dexter Self-Adjusting Brakes you have ( # 23-450-451) can actually be adjusted when removing and reinstalling, so you will not have to use a sledge hammer again. You will need to go to the back side of the brake to get access to the adjuster, which I included a picture of for reference. Using a slot screwdriver, or a brake adjuster spoon like the # W80630 if you have one, you will need to back it off a little at a time until the drum slides on. I also included an article that has...
    view full answer...
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  • Replacement Bearings For Dexter Model D1012 Axle
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    view full answer...
    Image 1 for


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C
Employee Ryan F
Written by:
Ryan F

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