Will this hub and drum fit Dexter 9,000–10,000 lb axles?

It is designed for the older-style 9,000–10,000 lb General Duty axle configuration manufactured before July 2009, and lists compatibility with Dexter hub part numbers 8-288-3, 008-288-03, and 8-288-03, plus drum part number 9-44-1. Verify your axle configuration, existing hub dimensions, and bearing numbers before ordering.

What bolt pattern and hub dimensions does this trailer hub have?

The hub has an 8 on 6-1/2-inch bolt pattern, a 4-3/4-inch pilot, and installed 5/8-inch wheel studs. The listed wheel sizes are 16 and 17.5 inches.

What are the brake drum dimensions, and what brake assemblies are compatible?

The brake drum measures 12-1/4 by 3-3/8 inches and is compatible with electric or hydraulic brake assemblies.

What is included with each hub and drum kit option?

Hub Only includes one 9K–10K General Duty trailer hub with 5/8-inch wheel studs installed. Drum Only includes one 12-1/4 by 3-3/8-inch brake drum, while Hub & Drum Assembly includes one of each and installed 5/8-inch wheel studs.

Are bearings, seals, and other installation parts included?

No. Bearings, races, seals, oil caps, and lug nuts are not included. The listed bearing references are inner 387A (2.250-inch ID) and outer 25580 (1.750-inch ID), both sold separately.

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RunningGearParts.com

RGP 9,000–10,000 lb Trailer Axles Hub & Drum, 8 on 6.5" Bolt Pattern, 12.25" x 3.375", Fits Dexter Axles Before July 2009

$138.89 USD

Shipping calculated at checkout.

kit

Drum Hub Hub Drum Assembly

Product variants

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

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.

Q1 Will this brake fit my trailer?

This brake assembly fits most standard 7,000 lb trailer axles that use 12" × 2" electric brakes with a 5-bolt mounting flange. Please verify your axle rating and brake dimensions before ordering. If you're unsure, send us your axle tag or hub information and we'll help confirm compatibility.

Q2 Does it fit Dexter or Lippert axles?

Yes. It is compatible with many standard Dexter, Lippert, Rockwell American, AL-KO, and other 7,000 lb trailer axles that use a standard 12" × 2" brake assembly. Always verify your axle specifications before purchasing.

Q3 Is this a self-adjusting brake?

Yes. This is a self-adjusting electric brake assembly, which automatically maintains proper brake shoe clearance during normal operation. This reduces maintenance and helps provide consistent braking performance.

Product Overview:

This 9K–10K General Duty Trailer Hub & Drum is designed for 9,000–10,000 lb general-duty trailer axles manufactured BEFORE July 2009. Choose from Hub Only, Drum Only, or Hub & Drum Assembly to match your replacement needs.

The hub features an 8 on 6-1/2" bolt pattern, 4-3/4" pilot, and 5/8" wheel studs. The matching brake drum measures 12-1/4" x 3-3/8" and is compatible with electric or hydraulic brake assemblies.

Commonly used on flatbed trailers, equipment trailers, and dual tandem trailers.

Key Specifications

Axle Capacity: 9,000–10,000 lbs General Duty
Application: Axles manufactured before July 2009
Hub Capacity: 5,000 lbs
Bolt Pattern: 8 on 6-1/2"
Hub Pilot: 4-3/4"
Wheel Stud Size: 5/8"
Brake Drum Size: 12-1/4" x 3-3/8"
Inner Bearing Size: 387A (2.250" ID), sold separately
Outer Bearing Size: 25580 (1.750" ID), sold separately
Wheel Size: 16" and 17.5"

Important: Bearings, races, seals, oil caps, and lug nuts are NOT included.

What's include by Kit Option:

Hub Only

(1) 9K–10K General Duty Trailer Hub
5/8" Wheel Studs installed

Drum Only

(1) 12-1/4" x 3-3/8" Brake Drum

Hub & Drum Assembly

(1) 9K–10K General Duty Trailer Hub
(1) 12-1/4" x 3-3/8" Brake Drum
5/8" Wheel Studs installed

OEM Replacement Part Number:

Hub:

Compatible with Dexter 8-288-3, 008-288-03, 8-288-03

Drum:

Compatible with Dexter 9-44-1

Compatible Bearing Reference:

Inner Bearing: 387A

Outer Bearing: 25580

Fitment Note: Designed for the older-style 9K–10K General Duty axle configuration used before July 2009. Please verify your existing hub dimensions, bearing numbers, and axle configuration before ordering.

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