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Control a heavily loaded Wrangler without giving up articulation
RockJock RJ-246200-101 increases rear roll rate for Wrangler JL builds carrying roof tents, racks, camping equipment, or racing loads that can overwhelm a standard rear bar.
Key Features
- RJ-246200-101 heavy 1 1/8-inch-diameter, 28-spline rear torsion bar
- 4340 heat-treated chromoly bar material
- Forged chromoly sway-bar arms
- Billet UHMW frame bushings
- Adjustable rear end links
- Designed for loaded overland and desert-racing use
- Works with a compatible front Antirock to balance suspension response
Fitment
| Years | Make or Application | Model or Dimensions | Verified Notes and Exclusions |
|---|---|---|---|
| 2018-2026 | Jeep | Wrangler JL two-door | All manufacturer-listed JL models; heavy bar may be too stiff when unloaded; verify link length and frame width |
| 2018-2026 | Jeep | Wrangler Unlimited JL four-door | All manufacturer-listed JL models; intended for loaded overland or racing use; verify link length and frame width |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | RJ-246200-101 |
| Position | Rear |
| Bar Diameter | 1 1/8 inches |
| Spline Count | 28 |
| Bar Material | 4340 heat-treated chromoly |
| Arms | Forged chromoly |
| Frame Bushings | Billet UHMW |
| UPC | 810038156095 |
What's Included
- One RJ-246200-101 heavy rear chromoly torsion bar
- Two forged chromoly arms
- Billet UHMW frame bushings
- Adjustable end links
- Required kit hardware
- Front sway bar, alternate-length links, optional frame shims, tools, and unrelated suspension parts are not included unless shown on the manufacturer packing list
About RockJock
RockJock develops Antirock sway bars to balance suspension movement while preserving off-road articulation. This heavy rear version is tuned for Wrangler JL builds carrying substantial permanent or competition loads.
Related Parts
- A compatible front RockJock Antirock selected for the vehicle and load balance
- Alternate-length rear links when the measured ride height falls outside the supplied link range
- RockJock frame shim pack when the measured JL frame width requires it
- Suspension fasteners replaced when inspection finds damaged threads or corrosion
FAQ
What is the RJ-246200-101?It is RockJock's heavy rear Antirock kit for loaded or racing Jeep Wrangler JL models.
Which Wrangler models does it fit?RockJock lists all 2018-2026 Wrangler JL two-door and Wrangler Unlimited JL four-door models.
Is this the standard-rate rear bar?No. It uses a heavier 1 1/8-inch bar intended for substantial cargo, overland equipment, or racing loads.
Can it be too stiff for an unloaded Wrangler?Yes. RockJock cautions that this heavy bar may be too stiff when the vehicle is not carrying the load it was selected to control.
Which suspension height matches the supplied links?The included links are intended around RockJock's 3.5-inch suspension system; other heights can require trimming or different links.
Are frame shims ever required?Yes. RockJock notes JL frame-width variation, so measure the vehicle and use the specified shim arrangement when needed.
Does the kit replace the factory rear sway bar?Yes. It is installed as the rear sway-bar system using RockJock's application instructions.
Should a front Antirock be used with it?RockJock recommends balancing front and rear roll control for rugged use; select the front system for the actual vehicle and load.
Installation Instructions
- Confirm the vehicle is a 2018-2026 Wrangler JL and that the permanent or racing load justifies the heavy rear rate.
- Verify the RJ-246200-101 package label, bar diameter, arm configuration, links, bushings, and hardware before removing factory parts.
- Measure frame width and ride height, then determine whether RockJock's shim arrangement or alternate link length is required.
- Support the vehicle safely and remove the factory rear sway-bar components according to the current service procedure.
- Install the UHMW bushings, heavy torsion bar, and forged arms in the positions specified by RockJock.
- Set the links so both arms have correct orientation and equal usable adjustment at ride height.
- Torque all hardware and cycle the suspension to verify tire, brake-line, exhaust, frame, and body clearance.
- Perform a controlled road test with the expected load, then recheck torque, link angles, bushings, and clearances.
California Proposition 65 Warning: Cancer and reproductive harm. See www.P65Warnings.ca.gov.
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