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RGP 5,200–7,000 lb Trailer Axle Idler Hub Kit – 8 on 6.5", 1/2"-20 Studs, Pre-Greased


Regular price $69.79 USD
Shipping calculated at checkout.

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.

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.
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.
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:

Designed for compatible 5,200–7,000 lb trailer axle applications, this pre-greased idler hub kit features an 8 on 6.5" bolt pattern and 1/2"-20 wheel studs for compatible heavy-duty trailer running gear.

The hub uses a #42 spindle bearing configuration with a 25580 inner bearing and 14125A outer bearing, along with a 10-225 grease seal. It cross-references Dexter 008-231-09 for compatible applications using the same bearing, spindle, bolt-pattern, and stud configuration. 

The kit comes pre-greased with wheel studs, lug nuts, dust cap, bearings, and spindle retention hardware. Always verify spindle type, bearing numbers, seal size, bolt pattern, and wheel stud size before ordering.

What’s Included by Kit Option: 

1 × Trailer Idler Hub

1 × 25580 Inner Bearing – Installed

1 × 14125A Outer Bearing – Included Loose

1 × 10-225 Grease Seal – Installed

8 × 1/2"-20 Wheel Studs – Installed

8 × Lug Nuts

2 × Plastic Covers

1 × Dust Cap with Rubber Plug

1 × Castle Nut

1 × Standard Washer

1 × D Washer

1 × Tang Washer

1 × Cotter Pin

Pre-Greased

Specifications:

Compatible Axle Applications: 5,200–7,000 lb

Product Type: Trailer Idler Hub Kit

Bolt Pattern: 8 on 6.5"

Number of Wheel Studs: 8

Stud Size: 1/2"-20

Spindle Compatibility: #42 Spindle

Inner Bearing: 25580

Inner Bearing ID: 1.750"

Outer Bearing: 14125A

Outer Bearing ID: 1.250"

Grease Seal: 10-225

Seal ID: 2.250"

Lubrication Type: Grease

Lubrication Condition: Pre-Greased

Cap Type: Dust Cap with Rubber Plug

Finish: Black Painted

OEM / Replacement Reference:

Dexter Cross Reference: 008-231-09

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