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RGP 3,500 lb Trailer Idler Hub Kit, 2 Kits, 5 on 5.0", 1/2" Studs, Pre-greased - Two Hubs/One Axle


Regular price $76.89 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 Description: 

Replace both wheel hubs on one compatible 3,500 lb non-braking trailer axle with this RGP two-hub kit. Each black-painted hub comes pre-greased with bearings, races, and a grease seal, plus matching lug nuts, a grease cap, and spindle-retention hardware. 

The hub features a 5 on 5" wheel bolt pattern and 1/2"-20 studs. Each hub supports up to 1,750 lb providing 3,500 lb capacity per pair when installed on a compatible axle.

Specifications: 

Brand: Running Gear Parts
Product Type: Two-hub idler hub replacement kit

Coverage: Two wheels/ one axle
Axle capacity: 3,500 lb
Hub capacity: 1,750 lb

Wheel bolt pattern: 5 on 5"
Wheel stud threads: 1/2"-20
Stud quantity: Five per hub
Finish:  Black paint

Lubrication: Pre-greased

Inner bearings: L68149, 1.378" bore
Outer bearings: L44649, 1.063“ bore

Inner races: L68111
Outer races: L44610

Grease seal dimensions: 1.719" ID x 2.565" OD

Application: Non-braking idler axles

What's Included by Kit Option:

Two-hub kit: 

2 x Black-painted idler hubs with pressed-in wheel studs
2 x L68149 inner bearings
2 x L44649 outer bearings
2 x L68111 inner races
2 x L44610 outer races
2 x Grease seals supplied with both hub kits
10 x Matching 1/2"-20 lug nuts
2 x Grease caps with rubber plugs
2 x Spindle castle nuts
2 x Spindle washers
2 x Tang washers
2 x D-washers
2 x Cotter pins

Bearings, races, and seals are included within the hub kits. Components are shown separately in the image to illustrate the contents. Use the spindle-retention hardware appropriate for your axle configuration.

Compatibility:

For compatible 3,500 lb idler axles using L68149 inner bearings, L44649 outer bearings, and 1.719" seal journal. 

Wheels must match the 5 on 5" bolt pattern and 1/2"-20 studs. Confirm bearing numbers, spindle dimensions, seal fits, and wheel clearance before ordering. 

These idler hubs are for non-braking applications. They do not replace brake drums or support installation of drum brakes.  

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