Which trailer axles and hubs does this Trailer Axle Bearing Kit fit?

This RGP Trailer Axle Bearing Kit is designed for grease-lubricated hubs on compatible 8,000 lb trailer axles, including Dexter 8K axles. Confirm that your hub uses the listed bearing, race, and seal numbers before ordering.

What parts are included in one kit, and how many hubs does it service?

One kit includes a 25580 inner bearing and 25520 inner race, a 02475 outer bearing and 02420 outer race, a double-lip grease seal, cotter pin, and tang washer. One kit services one hub; the two-kit option includes parts for two hubs.

What are the bearing sizes in the RGP 8,000 lb Trailer Axle Bearing Kit?

The 25580 inner bearing has a 1.750-inch ID, and the 02475 outer bearing has a 1.250-inch ID. The matching races are 25520 (3.265-inch OD) and 02420 (2.688-inch OD).

What size grease seal does this Trailer Axle Bearing Kit use?

The kit includes a double-lip grease seal with a 2.250-inch ID and 3.376-inch OD. Its listed replacement part number is Dexter 010-036-00.

Should I choose one kit or two kits for my trailer?

Choose one kit to service one hub or two kits to service two hubs. Each option includes corresponding quantities of the bearings, races, grease seals, cotter pins, and tang washers.

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RunningGearParts.com

RGP 8,000 lb Trailer Axle Bearing Kit for Grease Hub – 25580 & 02475, Fits Dexter 8K Axles

$27.89 USD

Shipping calculated at checkout.

Options

1 Kit 1 Pair

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:

The RGP 8K Trailer Axle Bearing Kit is designed for servicing grease-lubricated hubs on compatible 8,000 lb trailer axles.

Each kit includes the inner and outer bearings, matching bearing races, a double lip grease seal, cotter pin, and rubber plug for convenient hub maintenance and bearing replacement.

Key Specifications:

Axle Capacity: 8,000 lbs
Application: Grease Hub
Inner Bearing: 25580 – 1.750" ID
Inner Race: 25520 – 3.265" OD
Outer Bearing: 02475 – 1.250" ID
Outer Race: 02420 – 2.688" OD
Double Lip Grease Seal: 010-036-00 (2.250" ID x 3.376" OD)

What's include by Kit Option:

1 Kit – Services 1 Hub

(1) 25580 Inner Bearing
(1) 25520 Inner Race
(1) 02475 Outer Bearing
(1) 02420 Outer Race
(1) Grease Seal ID-2.250″, OD-3.376″, Double Lip
(1) Cotter Pin
(1) Tang washer

2 Kits – Services 2 Hubs

(2) 25580 Inner Bearings
(2) 25520 Inner Races
(2) 02475 Outer Bearings
(2) 02420 Outer Races
(2) Grease Seal ID-2.250″, OD-3.376″, Double Lip
(2) Cotter Pins
(2) Tang washer

OEM / Replacement Part Numbers:

Inner Bearing: 25580
Inner Race: 25520
Outer Bearing: 02475
Outer Race: 02420
Double Lip Grease Seal: Dexter 010-036-00

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