10K Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Right Hand (Passenger Side)

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10K Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Right Hand (Passenger Side)

10K Heavy Duty 12.25"x4" Trailer Axle Electric Brake Assembly - 10000 lb Capacity - Right Hand (Passenger Side)

SKU : 10HDRHBRKAS

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Regular price $136

Online price only

SAVE 0% (833) 910-3416
4.5
Rated 4.5 out of 5 stars
149 Reviews
Shipping: Calculated at Checkout
Brake Options:
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Upgrade your trailer with this premium 12.25" x 4" electric brake assembly, built for 10,000 lb heavy-duty trailer axles. Designed for Dexter Heavy-Duty Trailer Axles, this brake system ensures reliable stopping power and simplified installation.

Note: This brake assembly is not compatible with Rockwell, Texas Pride, or TK Trailer Axles and only fits Dexter Heavy-Duty Axles.

Single Brake Assembly:

  • Size: 12.25" x 4"
  • Capacity: 10,000 lb per axle
  • Side: Passenger Side Only (Right Hand)
  • Bolt Pattern: 7-Bolt Flange
  • Heavy Duty
  • Shipment Specs: 1) 14x14x6 Box @ 19 lbs

Pair Set:

  • (1) Driver Side Brake Assembly – 12.25" x 4"
  • (1) Passenger Side Brake Assembly – 12.25" x 4"
  • Heavy-duty 10K capacity
  • 7-bolt brake flange
  • Shipment Specs: 2) 14x14x6 Box @ 19 lbs

Complete Brake Kit:

  • (1) Driver Side Brake Assembly – 12.25" x 4"
  • (1) Passenger Side Brake Assembly – 12.25" x 4"
  • (1) Quart Axle Oil
  • (2) 10-56 Unitized Oil Seals – 4.506" O.D. / 3.125" I.D.
  • (2) 395S Inner Bearings – 4.331" I.D.
  • (2) 387A Outer Bearings – 2.250" I.D.
  • (2) 394A Inner Races – 4.331" O.D.
  • (2) 382A Outer Races – 2.810" O.D.
  • Shipment Specs: 2) 14x14x6 Box @ 19 lbs 1) 14x14x7 @ 28 lbs

Half Crate (20 Brakes Total):

  • (20) Driver Side Brake Assemblies – 12.25" x 4"
  • (20) Passenger Side Brake Assemblies – 12.25" x 4"
  • Shipment Specs: 1) Crate/Pallet @ 800 lbs

Crate (80 Brakes Total):

  • (40) Driver Side Brake Assemblies – 12.25" x 4"
  • (40) Passenger Side Brake Assemblies – 12.25" x 4"
  • Shipment Specs: 1) Crate @ 1560 lbs

Features:

  • Easy-to-Install: Only 7 bolts and 2 wires required for a full install (hardware sold separately)
  • Rear Adjustment Ports: Make brake adjustments fast and simple
  • Compatibility: Dexter Heavy-Duty Trailer Axles ONLY
  • Durable & Reliable: Built to perform under heavy loads and demanding trailer use
  • 1-Year Manufacturer Warranty for peace of mind

New brake assemblies must be properly burnished to ensure optimal performance:

  • Perform 20–30 brake applications
  • Decelerate from 40 mph to 20 mph each time
  • Allow brakes to cool between applications

Order Your 10K Electric Trailer Brake Assemblies Today
Whether you need a single assembly or crate quantities, The Trailer Parts Outlet provides high-quality, affordable trailer brake parts with fast shipping and top-tier support. If you're unsure about fitment or need help selecting the right setup, contact our experts — we're here to help!

4.5
Rated 4.5 out of 5 stars
Based on 149 reviews
Total 5 star reviews: 118 Total 4 star reviews: 15 Total 3 star reviews: 5 Total 2 star reviews: 1 Total 1 star reviews: 10
Customers Talked About
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149 reviews
  • MB
    Mark B.
    Verified Buyer
    Yesterday
    Rated 5 out of 5 stars
    Trailer brake assembly

    Brakes were what was expected. Fairly quick shipping. Although the packaging is a bit weak. Could use a bit more material to secure brake assembly in the box. Otherwise very good experience.

    The Trailer Parts Outlet
    4 minutes ago

    Thank you for your business and your feedback, we will definitely take that into consideration on our packaging!

  • DP
    Dale P.
    Verified Buyer
    1 week ago
    Rated 5 out of 5 stars
    brake assembly

    I was impressed with the product and the ease of replacing the 20 year old brakes on my trailer, the low cost and product quality

    The Trailer Parts Outlet
    1 week ago

    Great to hear you were impressed with the 3.5k Trailer Axle Electric Brake Assembly and that it made replacing your 20 year old brakes so easy, Dale! We're thrilled the product quality and low cost exceeded your expectations. It sounds like it was the perfect solution for updating your trailer. We really appreciate your business and thank you for your 5 star review!

    Loretta Peacock
    (936) 935-2186
    The Trailer Parts Outlet

  • CD
    Christopher D. B.
    Verified Buyer
    2 weeks ago
    Rated 4 out of 5 stars
    Electric brakes

    Installation was made easy having the assembly pre assembled

  • JM
    Jess M. B.
    Verified Buyer
    2 weeks ago
    Rated 5 out of 5 stars
    Hubs

    Great service, 1 part was lost in transit and was replaced without question 😊

  • GK
    Gary K.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Look good

    I bought 2 sets to install on RV, as last year when packing bearings brakes looked worn. So removed tire and drum today and noticed that brakes are still good as having something to compare shoes with . I did notice a difference in new assembly compared with OEM. OEM does not have auto brake adjust when you back up and hit the brakes . The new brake assembly does.

    The Trailer Parts Outlet
    1 week ago

    Hi Gary,

    Thank you for the 5-star review and for taking the time to share your feedback on the 3.5k Trailer Axle Electric Brake Assembly. We're glad to hear that they look good and that you're pleased with the quality. It sounds like you made a smart decision getting them ahead of time while doing your bearing maintenance - it's always good to have a comparison to work with. We appreciate you mentioning the difference with the auto brake adjust feature compared to your OEM setup. That's helpful information for other customers who might be wondering about the functionality differences when upgrading their brake assemblies.

    Loretta Peacock
    936-220-4018 The Trailer Parts Outlet