(2) 6×5.5 Idler Hubs with 6,000 lb Bearing Kits – RVIH6550-KITX2
This two-hub kit includes a matched pair of 6 on 5.5" idler hubs with the bearing, seal, cap, and lug nut components commonly needed for service-ready installation on compatible trailer axle setups.
Overview
This kit includes two 6×5.5 idler hubs with matching 6,000 lb bearing kits for compatible trailer applications using a 25580 inner bearing and 15123 outer bearing. Each hub includes pre-installed races and the common service parts needed to complete the assembly. It is a strong option for many utility, equipment, and livestock trailers using the listed bearing family, standard 6-lug wheel pattern, and required pilot clearance.
R&P Service Insight
Hub kits like this make the job cleaner when both sides of the axle need to be refreshed at once with the same matched bearing and hardware package.
- Matched Pair: Two hubs per kit helps keep both sides of the axle consistent during service.
- Critical Fit Point: The key fitment detail is the 25580 inner bearing with 1.750" inner diameter.
- Seal Choice Matters: This version includes the 2.250" ID seal, with a 2.125" option available for axles that require it.
R&P Knowledge Hub
Compatibility: Designed for compatible trailer hub applications using a 25580 inner bearing, 15123 outer bearing, 6 on 5.5" bolt pattern, and 2.44" EZ-Lube style dust cap.
Vehicle / System Fit: Suitable for many utility, equipment, and livestock trailers using idler hub configurations in the listed bearing family.
Installation Notes: Always confirm existing bearing numbers, seal dimensions, wheel pilot clearance, and lug hardware requirements before ordering.
Performance Insight: Buying the pair helps streamline a full axle-side refresh and reduces the chance of mixing older worn parts with fresh components.
R&P Repair Insight
The most common ordering mistake on 6-lug hub kits is assuming the bolt pattern alone confirms fitment. It does not. Bearing numbers and seal dimensions still have to match your spindle and axle setup.
- Inner Bearing Check: Your axle must use 25580 with a 1.750" inner diameter for this kit to fit.
- Wrong Bearing Family: If your inner bearing is 44649 with a 1.375" inner diameter, this kit will not fit.
- Seal Verification: Confirm whether your axle needs the included 2.250" ID seal or the alternate 2.125" version before installation.
Kit Includes
Two Idler Hubs
Includes two idler hubs with races installed for a cleaner, faster service job.
Matched Bearing Set
Each hub is paired with the listed inner and outer bearing combination for compatible setups.
Caps, Plugs, and Seals
Includes seals, 2.44" EZ-Lube dust caps, and dust cap plugs to complete the hub package.
Twelve Lug Nuts Included
Comes with twelve matching 1/2" conical seat lug nuts to finish the kit.
Specifications
| Specification | Detail |
|---|---|
| Hub Bolt Pattern | 6×5.5" |
| Inner Bearing | 25580 (1.750" ID) |
| Outer Bearing | 15123 (1.250" ID) |
| Seal Size | 2.250" ID included; 2.125" optional |
| Dust Cap | 2.44" EZ-Lube style |
| Included Lug Nuts | (12) 1/2" conical seat |
| Hub Quantity | 2 hubs per kit |
| Part Number | RVIH6550-KITX2 |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer idler hub applications using the listed bearing family and 6-lug hub pattern |
| Primary Fit | Many utility, equipment, and livestock trailers using a 25580 inner bearing and 15123 outer bearing |
| Secondary Fit | Applications requiring a 3.50" or larger wheel pilot diameter with a 6×5.5" wheel pattern |
| Notes | This bolt pattern matches many standard 6-lug trailer wheels and many GM pickup wheel patterns, but bearing numbers and pilot clearance still must be verified before ordering. |
Included Components
| Quantity | Item |
|---|---|
| 2 | Idler hubs (6 on 5.5" bolt pattern, with races installed) |
| 2 | Inner bearings – 25580 (1.750" ID) |
| 2 | Outer bearings – 15123 (1.250" ID) |
| 2 | Grease seals – 2.250" ID |
| 2 | 2.44" EZ-Lube dust caps |
| 2 | Dust cap plugs |
| 12 | Matching 1/2" lug nuts |
