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  1. Trailer Brakes
  2. Dexter Axle
  3. Electric Drum Brakes
  4. 7200 lbs Axle
  5. 12-1/4 x 2-1/2 Inch Drum
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
  9. 17-1/2 Inch Wheel
Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs

Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs

Item # 23-428-429
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Our Price: $644.49
Trailer Brakes
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Trailer Brakes 23-428-429 - 16 Inch Wheel,16-1/2 Inch Wheel,17 Inch Wheel,17-1/2 Inch Wheel - Dexter Axle
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12-1/4" x 2-1/2" Driver's-side and passenger's-side electric trailer brakes fit 7,200-lb axles. Mounting flanges have a 4-bolt pattern. Fit 16" or larger wheels. Lowest Prices for the best trailer brakes from Dexter Axle. Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs part number 23-428-429 can be ordered online at etrailer.com or call 1-800-496-5010 for expert service.
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  • Reviews (5)
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Dexter Axle Trailer Brakes - 23-428-429

  • Electric Drum Brakes
  • 7200 lbs Axle
  • 12-1/4 x 2-1/2 Inch Drum
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snow Trailer
  • Utility Trailer
  • Manual Adjust
  • Dexter Axle

12-1/4" x 2-1/2" Driver's-side and passenger's-side electric trailer brakes fit 7,200-lb axles. Mounting flanges have a 4-bolt pattern. Fit 16" or larger wheels.


Features:

  • Electric brakes are easier to install and offer more user control than hydraulic brakes
    • Require only an electric brake controller (sold separately) - no actuator or hydraulic lines necessary
  • Left-hand (driver's-side) brake assembly and right-hand (passenger's-side) brake assembly included
    • Mounting bolts and hardware sold separately
  • Made in the USA


Specs:

  • Dimensions: 12-1/4" diameter x 2-1/2" wide
  • Mounting flange bolt pattern: 4 bolt
  • Wheel size: 16" or larger
  • Axle rating: 7,200 lbs


23-428 Dexter 12-1/4" x 2-1/2" Electric Trailer Brake Assembly - 4 Bolt - Left Brake - 7.2K

23-429 Dexter 12-1/4" x 2-1/2" Electric Trailer Brake Assembly - 4 Bolt - Right Brake - 7.2K





Video of Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Dexter Axle Trailer Brakes - Electric Drum Brakes - 23-428-429 Review

Today we're going to take a look at the Dexter 12 1/4 inch trailer brake kit, includes the left hand and right hand brake assemblies for 7200 pound axles. Now, these are electric brakes. Electric brakes are a lot easier to install, they offer more user control than hydraulic brakes. Basically they require just an electric brake control, which we do sell separately on our website. There's no actuator or hydraulic lines necessary. Now these are manual adjustment brakes and you can do that by right at the bottom here there's this adjustment gear that you can adjust it in or out. Now, manual adjustment brakes do require periodic manual adjustment.

This part includes both the left hand driver side, the right hand passenger brake assemblies. Now, the mounting bolts and the hardware you use to install this is sold separately. A few dimensions on this. The dimension on the brake assembly is 12 1/4 inch diameter by 2 1/2 inches wide and where those measurements are taken, the diameter would be measured from this shoe all the way across to this shoe, so if we put a ruler on that it's 12 1/4 inches. The 2 1/2 inches wide would be the width of the brake pad on the shoe. There's your 2 1/2 inches. Now, this does use a brake mounting flange bolt pattern of four bolts.

You can see the four bolt holes right here. Those require the use of 12 1/4 brake drums. The wheel size used on this is 15 inches or larger and again the axle rating they're designed for is 7200 pound axles. Now, these are electric brakes and you'll notice they do have two wires, two red wires on them. These do need to be connected. One goes to a brake feed, the other goes to the green ground and they're both red wires so either wire can be used for either function. The last thing I wanted to let you know is the left hand and right hand, how to tell the difference in which for which side.

Now, on a new assembly there will be stickers that tell you that. That's easy to do. But if the sticker wasn't there, the way to tell is you just look at the length of the pad on the brake shoe. This pad goes from here all the way to here. This one's from here to here.

This is the shorter pad. Shorter pad is always the primary shoe that'll always face the front of the trailer, so that's telling you this is the right hand passenger side assembly and if we go to the other one, same way: look at the length of the pad. Goes from here to here, this shoe is just from here to here. This is shorter. Primary shoe faces the front; that's telling you that this is the left hand driver side assembly. That should do it for the review on the Dexter 12 1/4 inch electric trailer brake kit with the left and right hand brake assemblies for 7200 pound axles.


Customer Reviews

Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs - 23-428-429

Average Customer Rating:  5.0 out of 5 stars   (5 Customer Reviews)

12-1/4" x 2-1/2" Driver's-side and passenger's-side electric trailer brakes fit 7,200-lb axles. Mounting flanges have a 4-bolt pattern. Fit 16" or larger wheels.

by:

GREAT JOB JUSTIN!
FIT WAS PERFECT!WORKED
GREAT




by:

Everything went easy ,and brake backing plates where exactly what I ordered an delivered on time




by:

It makes the trailer stop




by:




by:



5
5

See what our Experts say about this Dexter Axle Trailer Brakes



  • Mounting Bolt Pattern and Center Hole Diameter For Dexter Trailer Brake Assemblies 23-248 and 23-429
    The Dexter Electric Trailer Brake Assembly # 23-429 & # 23-428 have a center opening of 3-7/8" for fitting on the axle tube. It will mount to bolt holes that are 3-5/8" spread left to right and 4-3/8" top to bottom. I have included images below with both measurements to help you identify the fitment. We also have them as a Set # 23-428-429 since you will will being replacing them on multiple axles. If these will not fit your current axles please let me know your mounting pattern and the...
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  • Mounting Bolt Pattern for Dexter 12-1/4 x 2-1/2-Inch Electric Drum Brake Assemblies
    All of our 12-1/4 x 2-1/2-inch brake assemblies use a 4-bolt mount. These appear on the linked page. We have none with a 9-bolt flange mounting pattern. I did check with several of our install and technical staff and I learned that some brake assemblies will use a backing plate that has extra holes, holes not intended for mounting purposes.
    view full answer...
  • What Trailer Brakes Do I Need For My Gatormade Aardvark Trailer
    The brakes that you will need for your Gatormade Aardvark is the Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs, part # 23-428-429. I have included a product description link and a video demo link below.
    view full answer...
  • Is Dexter Electric Trailer Brake Kit for 7,200 lb Axles for One Axle or Two
    The Dexter Electric Trailer Brake Assembly - 12-1/4" - Left Hand # 23-428 is just one left hand brake assembly; the other side is the Dexter Electric Trailer Brake Assembly - 12-1/4" - Right Hand # 23-429. That is for one axle, and you can order them as a unit with the Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs # 23-428-429. For an adjustment spoon you will need the Brake Adjustment Spoon for Drum Brakes # W80630, and the correct mounting...
    view full answer...
  • Trailer Brakes Compatible with 12x2 inch or 12-1/4x2-1/2 Inch Hubs
    We have a fit for 12x2 inch hubs or 12-1/4x2-1/2 inch hubs. The Dexter Electric Trailer Brake Kit - 12-1/4" - Left and Right Hand Assemblies - 7,200 lbs # 23-428-429 is the only fit we have for the larger hubs and it has a 4 bolt versus 5 bolt brake flange connection, but we have both electric or hydraulic options for the 12x2 inch hubs. I've linked the page to all those options.
    view full answer...
  • Dexter Replacement Brake Assemblies that are 12-1/4 inch by 2-1/2 inch
    That's an 8k rated Dexter brake assembly for the right hand side of the trailer which we offer with the part # DX52QR for just the one assembly or part # 23-428-429 for both the right and left side.
    view full answer...
  • Testing and Replacing Brakes on a 2012 Carriage Cameo Trailer
    I've attached an article to help you test the magnets. You also should inspect the wiring for the brake that's giving you issues. If you need to replace the brake you don't have to do both. However, it might be easier in the long run and if the others are showing wear it's a good idea. It can save you time and money later. To determine which brakes to get you can measure the inside diameter of your drums. If they're 12 inch drums then I recommend using # AKEBRK-7-SA. These are self-adjusting...
    view full answer...
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  • Mounting Hole Pattern for Dexter 12 x 2 Electric Drum Brake 23-105-09
    Most of our 12 x 2 electric drum brake assemblies like Dexter left/right kit # 23-112-113 use a 5-bolt mounting pattern but the Dexter brake kit # 23-105-106-09 has both 4-bolt and 5-bolt mounting holes. I went to our warehouse and measured the spacing of the 4 bolt holes. You can see this center-to-center hole spacing in the photo I prepared for you. Please note that we do have a brake in a similar size, 12-1/4 x 2-1/2, for a 7200-lb axle that uses a 4-bolt pattern. This is brake set...
    view full answer...
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  • Electric Trailer Brakes for 6,000 lb or 7,200 lb Axle
    The only way to know for sure what the capacity is of your axle is to contact the manufacturer with the serial number, but since you said they are 3 inch round axles, you are correct they will almost certainly be either 6,000 lb, 7,000 lb, or 7,200 lb axles. We can actually get you set up with new electric brakes based on the size of your hub and drum. You just need to measure the inside diameter and depth of your drum, as well as know the brake flange mounting bolt pattern to be sure....
    view full answer...
  • Replacement Hub and Drums For PJT Trailer With 008-393-03 Installed
    Thanks for all of the information on your PJT Trailer! Based on your drum part number you have a 12-1/4" Drum that is oil bath. The Dexter # 8-393-4UC3 is almost right, but it is designed for grease and not oil. You will need the # 8-393-4UC3 and oil seal # 10-63 for each hub. This hub does not include the bearings so you will also need new inner bearing # 25580 and outer bearing # 02475 for each hub. If you need replacement brakes now or in the future you will need # 23-428-429 for...
    view full answer...
  • Dexter 7,200 Pound Axle Hub and Drum Assembly with 5/8 Inch Wheel Studs
    We have Dexter 8 on 6-1/2 Hub-and-Drum Assembly for 7,200-lb Axle - 9-Bolt and Newer 4-Bolt Brake Flange Item # 8-393-6UC3-A. It uses inner bearing 25580 and outer bearing 02475. This hub is compatible with 12-1/4 by 2-1/2 inch brakes # 23-428-429 which have a 4-bolt mounting pattern.
    view full answer...
  • Is The Distance Between Races On Dexter Hub 8-285-11 and 8-393-6UC3-A The Same?
    I had our warehouse measure the distance between the inner and outer races of the Dexter Trailer Hub and Drum # 8-285-11 and # 8-393-6UC3-A and they found that both of them have the exact same 1-3/4" measurement, so as long as you have the # 25580 inner bearing and # 02475 outer bearing combination either hub will fit fine. You will just need to match the hub to the correct brake assemblies as the # 8-285-11 uses 12-1/4" x 3-3/8" brake assemblies # 23-434-435 where the # 8-393-6UC3-A uses...
    view full answer...
  • Parts Needed to Add Brakes to Mobile Home Axle
    From the measurements you mentioned it sounds like you have a spindle that could be compatible with a hub and drum like the Dexter 8 on 6-1/2 # 8-393-6UC3-A, but by the time that you added a brake assembly like the # 23-428-429 you'd more than likely save yourself time, money and work by completely replacing the axle. If you wanted to just replace the hubs and add brakes, to confirm which hubs and brakes you'll want to use, you'll need to match the bearings on your current hubs. The Dexter...
    view full answer...
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Adam R
Expert Research:
Adam R
Employee Alexander C
Written by:
Alexander C

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