12,000 lb Axles 12.25" x 5", Self-Adjusting Electric Brake
12,000 lb Axles 12.25" x 5", Self-Adjusting Electric Brake - 1 PAIR is backordered and will ship as soon as it is back in stock.
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Care information
Care information
To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:
- Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
- Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
- For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
- Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
- Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
- After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
- If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.
Delivery and Shipping
Delivery and Shipping
Handling Time: Orders ship out within 1 business day after payment is received.
Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.
Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).
Tracking: A tracking number will be provided once your order is dispatched.
12,000 lb Axles 12.25" x 5", Self-Adjusting Electric Brake
Upgrade your trailer’s braking power with this TrailerSupplies 12-1/4" x 5" Self-Adjusting Electric Brake Assembly Set, specially engineered for 12,000 lb trailer axles. This premium brake kit includes one left-hand (driver side) and one right-hand (passenger side) brake assembly — both fully preassembled with brake shoes, springs, and high-performance magnets mounted on heavy-duty backing plates. These self-adjusting electric drum brakes automatically maintain proper tension, reducing wear and simplifying maintenance over time. The assemblies are compatible with Dexter part number K23-442-00 and work with a wide range of heavy-duty trailer axles, including Dexter, AL-KO, Lippert, Rockwell, and others. Crafted with top-grade materials to ensure long-lasting durability and optimal performance, this set is designed for 12-1/4" drum diameters and 5" widths, with a 7-hole brake flange for secure mounting. Perfect for heavy-duty applications such as equipment transport, flatbeds, and dual tandem trailers.
What's Included by Kit Option
1 Pair (2 Brakes – LH + RH)
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1 × Left-Hand (Driver Side) 12-1/4" x 5" Electric Brake Assembly
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1 × Right-Hand (Passenger Side) 12-1/4" x 5" Electric Brake Assembly
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Self-adjusting mechanism pre-installed
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Fully mounted with shoes, magnets, springs, and heavy-duty backing plates
2 Pairs (4 Brakes – 2 LH + 2 RH)
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2 × Left-Hand 12-1/4" x 5" Electric Brake Assemblies
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2 × Right-Hand 12-1/4" x 5" Electric Brake Assemblies
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Self-adjusting internal mechanisms
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Suitable for tandem axle trailers rated 12,000–15,000 lb
2 Pairs + Grease Seals
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2 × Left-Hand 12-1/4" x 5" Electric Brake Assemblies
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2 × Right-Hand 12-1/4" x 5" Electric Brake Assemblies
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4 × Unitized Oil Seals (3.125" ID × 4.50" OD × 0.595" Width)
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Dual-lip design prevents grease leakage and contamination
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Replaces Dexter 010-056-00, Hayes 091023, AL-KO 568217
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Designed for full axle rebuild or heavy-duty maintenance
Payment & Security
Payment methods
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