Click to zoom in
Add rear sway-bar leverage with a long, rigid billet arm pair
RockJock RJ-202013-101 is built for Universal RockJock 25-spline Antirock torsion-bar systems and RockJock JK Wrangler rear Antirock kits CE-9900JKR and CE-9900JKR4. Not for RockJock 36-inch by 1-inch or 40-inch by 1-inch sway bars. Final compatibility depends on matching every dimension, mounting point, moving component, and clearance in the intended suspension system.
Key Features
- CNC-machined 7075-T6 billet aluminum construction
- 21-inch overall length with a 3/4-inch main body
- Standard RockJock 25-spline interface
- Two 1/2-inch end-link holes adjust leverage
- Clear-anodized finish with included arm hardware
Fitment
| Fitment Type | Verified Application | Required Checks |
|---|---|---|
| Dimension and system specific | Universal RockJock 25-spline Antirock torsion-bar systems and RockJock JK Wrangler rear Antirock kits CE-9900JKR and CE-9900JKR4. Not for RockJock 36-inch by 1-inch or 40-inch by 1-inch sway bars. | Confirm exact dimensions, mounting hardware, geometry, loads, articulation, component condition, and full suspension and steering clearance |
Specifications
| Detail | Value |
|---|---|
| Product Type | Sway Bar Arms |
| Overall Length | 21 inches |
| Material | 7075-T6 billet aluminum |
| Main Thickness | 3/4 inch |
| Tip Thickness | 3/8 inch |
| Spline Count | 25 |
| Near Link-Hole Radius | 18.500 inches |
| Far Link-Hole Radius | 19.500 inches |
| Pair Weight | 4.1 lb |
What's Included
- One pair of 21-inch forged billet aluminum Antirock arms
- One matching arm hardware pack
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
- RockJock 25-spline Antirock torsion bars
- RockJock RJ-201000-101 double-shear end-link brackets
- Application-length RockJock sway bar end links
FAQ
What is the RJ-202013-101?It is the RockJock sway bar arms described in the Specifications table for the stated dimension-based application.
Which torsion bars accept these arms?They fit compatible RockJock 25-spline Antirock torsion bars, except the two excluded one-inch-bar configurations.
Which RockJock kits use these arms?RockJock lists them for CE-9900JKR and CE-9900JKR4 JK Wrangler rear Antirock kits.
Which bars are excluded?They are not for RockJock 36-inch by 1-inch or 40-inch by 1-inch sway bars.
How is leverage adjusted?Two 1/2-inch link holes place the end link 18.500 or 19.500 inches from the spline center.
Are the arms sold individually?No. This exact part number includes a pair of arms.
Is arm hardware included?Yes. The matching arm hardware pack is included; the torsion bar, links, bushings, and vehicle brackets are separate.
What must be checked before driving?Verify full spline engagement, safe link angles, hardware torque, and clearance through complete suspension travel without binding or an over-center condition.
Installation Instructions
- Verify the package label and manufacturer part number RJ-202013-101 before removing, cutting, or installing components.
- Confirm the torsion bar has 25 splines and is not one of the excluded one-inch bar configurations.
- Measure arm sweep, end-link angle, tire clearance, frame clearance, hoses, wiring, and full suspension travel.
- Install both arms on clean undamaged splines in the required orientation.
- Install the included retaining and pinch hardware using the current RockJock procedure.
- Select the link hole that preserves safe leverage and link geometry.
- Cycle the suspension to verify the arms and links cannot bind, contact, or go over center.
- Tighten all hardware to the applicable specifications and reinspect after initial use.
California Proposition 65 Warning: Cancer and reproductive harm. See www.P65Warnings.ca.gov.
RockJock
Shop RockJock suspension and steering components for your next chassis project at Black Ops Auto Works. Explore Antirock sway-bar kits, Johnny Joint control arms and rod ends, Currectlync steering references and service hardware. Choose the system or component around your vehicle and installation plan.Antirock Sway Bars and LinksCompare application-specific kits with universal bars, arms, end links and mounting tabs. Bar length, spline count, arm configuration and link dimensions work together in the installation. Select complete kit coverage or match each service component to the existing Antirock system rather than treating every bushing or arm as universal.Johnny Joint Arms, Rod Ends and Rebuild PartsThe selection includes adjustable control arms, forged or weld-on rod ends and rebuild components. Compare body size, mounting width, bolt bore and threaded-shank specifications, including right- or left-hand thread. Match rebuild packs and assembly tools to the exact joint being ser...
View RockJock Products