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Carry 3-link suspension load through a sealed axle-housing pivot
RockJock RJ-301002-101 is built for 2018-2026 Jeep JL Wrangler and 2020-2026 Jeep JT Gladiator with the stock front differential housing, driver-side cast loop only, for 3-link suspension conversion. Not for the passenger side, aftermarket differentials, fabricated housings, or stock control-arm bolt holes that have not been drilled for the required 5/8-inch hardware. Final compatibility depends on matching every dimension, mounting point, moving component, and clearance in the intended suspension system.
Key Features
- RJ-301002-101 is engineered only for the driver-side cast loop on stock JL and JT front differential housings
- Sealed stainless-steel spherical bearing requires no greasing
- Provides 32 degrees of total articulation
- Two-inch mounting width matches the JL/JT upper-control-arm fork
- Includes the exact installation tool for the press-fit assembly
Fitment
| Fitment Type | Verified Application | Required Checks |
|---|---|---|
| Dimension and system specific | 2018-2026 Jeep JL Wrangler and 2020-2026 Jeep JT Gladiator with the stock front differential housing, driver-side cast loop only, for 3-link suspension conversion. Not for the passenger side, aftermarket differentials, fabricated housings, or stock control-arm bolt holes that have not been drilled for the required 5/8-inch hardware. | Confirm exact dimensions, mounting hardware, geometry, loads, articulation, component condition, and full suspension and steering clearance |
Specifications
| Detail | Value |
|---|---|
| Product Type | Suspension Spherical Bearings |
| Manufacturer Part Number | RJ-301002-101 |
| Application | Stock JL/JT front differential, driver side only |
| Outer Barrel | CNC-machined steel, clear zinc, 1.795-inch press-fit area |
| Bearing | Sealed stainless-steel spherical |
| Articulation | 32 degrees total, 16 degrees each direction |
| Mounting Width | 2 inches |
| Through-Bolt Hole | 5/8 inch |
| Bearing Size | 0.875-inch ID x 1.625-inch OD |
What's Included
- One RJ-301002-101 Uni-Ball assembly
- One installation tool
About RockJock
RockJock develops connected Antirock sway bar systems, serviceable Johnny Joints, steering components, and suspension hardware for trail control and articulation. Its replacement and universal components are specified by exact dimensions so builders can preserve safe geometry and serviceability.
Related Parts
- Application-engineered 3-link control arms
- 5/8-inch suspension hardware matched to the control-arm fork
- RockJock replacement bearing and misalignment-spacer components
FAQ
What is the RJ-301002-101?It is the RockJock suspension spherical bearings described in the Specifications table for the stated dimension-based application.
Which side of the differential accepts this part?It installs only in the machined cast loop on the driver side above the differential cover.
Will it fit an aftermarket JL or JT differential?No. RockJock specifies this exact part for stock JL and JT differential housings only.
Does it fit the passenger side?No. The passenger-side upper control arm is removed in the intended 3-link conversion, and this Uni-Ball is not used there.
Must the control-arm fork be modified?Yes. The fork's bolt hole must be drilled for the required 5/8-inch through bolt.
How much articulation is available?The sealed bearing provides 32 degrees total, or 16 degrees from center in each direction.
Does the bearing require grease?No. It is a sealed spherical bearing assembly.
Is the installation tool included?Yes. The exact product includes the Uni-Ball assembly and its press installation tool.
Installation Instructions
- Verify the package label and manufacturer part number RJ-301002-101 before removing, cutting, or installing components.
- Confirm the vehicle has a stock JL or JT front differential housing and identify the driver-side cast loop above the cover.
- Remove the factory bushing using an appropriate press procedure without damaging the machined housing bore.
- Inspect and measure the bore before pressing the assembly into position with the included tool.
- Orient and press the Uni-Ball squarely into the driver-side loop, then install the specified snap ring and spacers.
- Drill the upper-control-arm fork bolt hole for the required 5/8-inch through bolt using the suspension builder's engineered procedure.
- Assemble the 3-link joint without side-loading the bearing and torque all hardware to the applicable specifications.
- Cycle steering and full suspension travel to confirm articulation and clearance, then reinspect the hardware after initial use.
California Proposition 65 Warning: Cancer and reproductive harm. See www.P65Warnings.ca.gov.
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