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  1. Trailer Brakes
  2. Dexter
  3. Electric Drum Brakes
  4. 8000 lbs Axle
  5. 12-1/4 x 3-3/8 Inch Drum
  6. 15 Inch Wheel
  7. 16 Inch Wheel
  8. 16-1/2 Inch Wheel
  9. 17 Inch Wheel
  10. 17-1/2 Inch Wheel
Dexter Electric Trailer Brake for Dexter ABS Tow Assist - 12-1/4" - Left/Right Hand - 8K
Dexter

Dexter Electric Trailer Brake for Dexter ABS Tow Assist - 12-1/4" - Left/Right Hand - 8K

Part Number: DX55WR
In Stock
$969.85
Trailer Brakes
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The best trips aren't about the miles, they're about how easy the ride feels. Swap in new ABS brake assemblies and your trailer will track steadier and stop smoother, so mountain grades, crosswinds, and sudden traffic don't rattle you. Great Prices for the best trailer brakes from Dexter. Dexter Electric Trailer Brake for Dexter ABS Tow Assist - 12-1/4" - Left/Right Hand - 8K part number DX55WR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Dexter Trailer Brakes - DX55WR

  • Electric Drum Brakes
  • 8000 lbs Axle
  • 12-1/4 x 3-3/8 Inch Drum
  • 15 Inch Wheel
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • 17-1/2 Inch Wheel
  • Standard Grade
  • ABS
  • Self Adjust
  • Dexter

The best trips aren't about the miles, they're about how easy the ride feels. Swap in new ABS brake assemblies and your trailer will track steadier and stop smoother, so mountain grades, crosswinds, and sudden traffic don't rattle you.


Highlights:

  • ABS Tow Assist Compatible: Integrated sensor communicates with Dexter ABS Tow Assist to reduce wheel lock-up, improve trailer control, and help mitigate sway.
  • Nev-R-Adjust Design: Self-adjusting brake shoes automatically maintain clearance for consistent stopping power with no manual adjustments.
  • For ABS 8,000-lb Axles: Built for Dexter ABS-equipped 8K axles with a 4-bolt mounting flange.
  • Simpler Braking Setup: Works with your in-cab brake controller for smooth electric braking - no hydraulic lines required.
  • Peace of Mind on Every Trip: Bonded brake shoes and proven magnet design hold up to miles of towing.
Made in USA

Features to know about

Built for ABS Tow Assist Safety

When traffic suddenly slows and every second counts, Dexter's ABS Tow Assist brakes step in. Each assembly has a built-in ABS sensor that talks directly with your Tow Assist system, helping prevent wheel lockup and keeping your trailer stable under hard braking. The same system also applies selective braking to help reduce trailer sway, giving you more confidence and control during highway cruising and in emergency stops.

No Manual Adjustments, Ever

Traditional brakes need regular tweaking as the shoes wear down. With Dexter's Nev-R-Adjust system, these assemblies take care of themselves. A tensioning cable inside keeps the shoes aligned for peak stopping power mile after mile, so you spend less time wrenching and more time towing.

Straightforward Electric Setup

No actuators, no hydraulic lines, just connect to your in-cab brake controller and reinitialize your Dexter Tow Assist system after installation. Once reset, the integrated ABS sensors sync automatically, giving you reliable braking performance with minimal upkeep.

Specs:

Application & Capacity

  • Application: Dexter Tow Assist ABS hub-and-drum assemblies
  • Configuration: left/right hand - driver's and passenger's sides
  • Brake type: electric, Nev-R-Adjust (self-adjusting)
  • ABS: integrated ABS sensor
  • Axle rating: 8,000 lbs

Dimensions & Mounting

  • Diameter: 12-1/4"
  • Width: 3-3/8"
  • Mounting flange: 4-bolt
  • Compatible with 12-1/4" hub/drums
  • Compatible wheel sizes: 15" or larger

Warranty

  • 5-year limited warranty


K23-674-00 Dexter Never Adjust Electric Trailer Brake for Dexter Anti-lock Braking System Tow Assist - 12-1/4" - Left - 8K

K23-675-00 Dexter Never Adjust Electric Trailer Brake for Dexter Anti-lock Braking System Tow Assist - 12-1/4" - Right - 8K

Installation Details DX55WR Installation instructionsAlternate Instructions DX55WR Installation instructions


California residents: click here


Ratings & Reviews

5.0

1 reviews
The best trips aren't about the miles, they're about how easy the ride feels. Swap in new ABS brake assemblies and your trailer will track steadier and stop smoother, so mountain grades, crosswinds, and sudden traffic don't rattle you.

by:


1
1

See what our Experts say about this Dexter Trailer Brakes

  • Do I Have To Adjust New Dexter ABS Brakes After Installing On Trailer?
    Nope - that’s one of the perks of these. All models of Dexter ABS Brake Assemblies, such as 3.5k # DX73WR, 4.4k # DX83WR, 7.5k # DX23WR, and 8k # DX55WR, are Nev-R-Adjust brakes. They’ll automatically maintain the proper shoe clearance once they’re burnished in. Just make sure to follow Dexter’s break-in procedure - about 20–30 controlled stops from 40 mph - so the shoes seat evenly. Brian, are you replacing a single axle or doing all four corners? It’s best to do them all at the same...
    view full answer...
  • Replacement Dexter Tow Assist Brakes For 2024 Forest River RiverStone With 8K Axles
    Alan, yes - the RiverStone fifth wheels use tandem 8K Dexter Tow Assist axles, so the # DX55WR assemblies are the correct replacements for all four hubs. Just replace them in pairs per axle to keep braking balanced. If your system shows an amber light after install, it usually just means one ABS sensor plug isn’t fully seated - unplug and reseat both sides and it’ll clear automatically. Let me know how it goes, and safe travels with that super nice RV!
    view full answer...
  • 2023 Jayco North Point 5th Wheel Travel Trailer - Replacement Brake Pads For Dexter Tow Assist ABS
    Terry, the quickest way is to check your axle tube diameter and then confirm with the axle tag if you have it: ~3 inch tube 7K axle with tow assist abs = use # DX69WR Left and # DX79WR Right ~3-1/2 inch tube 8k axle with tow assist abs = use # DX55WR (includes left and right as a pair) Bearings can help confirm, but they overlap a bit: both 7K and 8K use 25580 inner bearings 7K may use 14125A, 15123, or 02475 outer bearings, while 8K uses 02475 outer only. Because both families use 12-1/4...
    view full answer...
  • Which Brakes Are Correct Replacements For 2022 Forest River Flagstaff 5th Wheel With Dexter ABS
    Kevin, yes - the Dexter 8K ABS brake assemblies # DX55WR are the direct replacements for the Tow Assist setup used on Dexter 8K Flagstaff axles that have the Tow Assist system. They mount to the same 4-bolt flange and plug right into your existing ABS and brake connectors. If your axle tag shows 7,000 lbs instead of 8,000, then the correct set would be the # DX69WR (Left) and # DX79WR (Right). Always match the replacement to the axle rating on the tag to keep your Tow Assist system reading...
    view full answer...
  • Which ABS Brakes Are Good To Replace Old Ones On 2022 Airstream Classic 30RB ?
    Ryan, start with looking at the axle tube so you don't have to get your hands too dirty just to check what parts you need: ~3 inch tube with 7K Tow Assist hubs = order the # DX69WR Left and # DX79WR Right ~3-1/2 inch tube with 8K Tow Assist hubs = order the # DX55WR If you’re checking bearings, remember both use 25580 inners. 7K can have 14125A / 15123 / 02475 as the outer 8K is 02475 outer only. Since bearings can overlap, the tube diameter and/or axle tag is the simplest way to nail...
    view full answer...
  • Can Dexter 8K ABS Tow Assist Brakes Be Used As Upgrade On Dexter ABS 7k Or 7.5K Axle?
    Ron, they can’t - even though both the 7.5K # DX23WR and 8K # DX55WR ABS Tow Assist brakes are 12-1/4" diameter, they use different shoe widths and hardware that match specific drum depths and axle components. The 7.5K brakes use a 2-1/2" wide shoe, while the 8K version steps up to a 3-3/8" shoe. That extra depth means the 8K backing plate, drum, and magnet sit farther out, so they won’t line up correctly on a 7K or 7.5K hub. If your axle tag lists 7,000 lbs, the correct ABS replacements...
    view full answer...
  • How To Install Dexter Tow Assist Replacement Brakes On 2022 Airstream With 8K Dexter Axle Tow Assist
    Yes, Laura - the Dexter 8K ABS brakes # DX55WR install just like standard 12-1/4 inch electric assemblies. Each one bolts to the same flange and connects to your existing wiring harness for brakes and ABS system. Once installed, the Tow Assist system performs a self-check - you’ll see the green light when everything’s synced. Are you comfortable doing basic brake work, or planning to have an RV shop handle it?
    view full answer...
  • How Can I Tell If I Need 7K or 7.5K or 8K ABS Brakes For Horse Trailer Axle With Anti Lock Brakes?
    Heather, most horse trailers in that weight range run 7K, 7.5K or 8K axles, depending on the model year. The easiest way to tell which you have is by checking the axle tube or bearing combination: A 3" tube with a 14125A outer bearing usually indicates a 7K axle. If this size the correct ABS brakes are Left # DX69WR and Right # DX79WR. A 3" tube with a different drum depth (12-1/4") means you’ve got the 7.5K axle, with the correct ABS brake assemblies being # DX23WR. A 3-1/2" tube using...
    view full answer...
  • Can I Upgrade 7K ABS Dexter Brakes to 8K Dexter ABS Brakes For Trailer With Tow Assist?
    Ron, they can’t - even though both the 7K # DX69WR / # DX79WR and 8K # DX55WR use 12-1/4 inch diameter drums, the 8K shoes are 3-3/8 inch wide versus 2 inch on the 7K, and the magnets sit deeper. That mismatch causes poor drum contact and throws off the ABS readings. Do you happen to know your axle tube size? 3 inch or 3-1/2 ? That’s the easiest way to confirm before ordering.
    view full answer...
  • Do Dexter ABS Tow Assist Brakes Need Setup After Installing New Brake Assemblies? How To Sync?
    Travis, the ABS system’s smart enough to handle that on its own. Once you install the new assemblies - like the # DX23WR for 7.5K or the # DX55WR for 8K axles - you just reconnect the brake wiring and ABS plugs when installing the hub, torque the hardware, and power the trailer up. The Tow Assist controller does a self-check every trip and will show a steady green light when it recognizes everything’s working. Did your indicator light come on amber after you swapped parts and you're still...
    view full answer...

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Info for this part was:

Employee Wilson B
Updated by:
Wilson B
Employee Dawn Z
Updated by:
Dawn Z
Employee Daron K
Edited by:
Daron K
Employee Andy C
Installed by:
Andy C
Employee Kim H
Written by:
Kim H

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