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Fit adjustable sway bar leverage into tight chassis spaces
RockJock CE-9904-18M is built for Universal 25-spline Antirock torsion-bar applications and RockJock CE-9900A TJ/LJ front Antirock kits. Not compatible with 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 6061-T6 billet aluminum arm pair
- Thin 3/8-inch body provides clearance away from the splined end
- Five 1/2-inch link holes adjust effective leverage
- Standard 25-spline Antirock interface
- Clear-anodized finish with engraved logo
Fitment
| Fitment Type | Verified Application | Required Checks |
|---|---|---|
| Dimension and system specific | Universal 25-spline Antirock torsion-bar applications and RockJock CE-9900A TJ/LJ front Antirock kits. Not compatible with 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 | 18 inches |
| Material | 6061-T6 billet aluminum |
| Spline-End Thickness | 3/4 inch |
| Arm-Body Thickness | 3/8 inch |
| Spline Count | 25 |
| Link-Hole Diameter | 1/2 inch |
| Link-Hole Radii | 12.195, 13.195, 14.195, 15.195, and 16.195 inches |
| Pair Weight | 4 lb |
What's Included
- One pair of 18-inch thin-body billet aluminum Antirock arms
- Arm hardware, torsion bar, links, bushings, and brackets are separate unless supplied in a complete kit
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 CE-99005A arm hardware pack
- RockJock double-shear end-link bracket kit
FAQ
What is the CE-9904-18M?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, subject to the stated 1-inch-bar exclusions.
Which RockJock kit uses these arms?RockJock lists them in its CE-9900A TJ and LJ front Antirock kits.
Why is most of the arm 3/8 inch thick?The thin body provides extra clearance in tight locations such as near TJ and LJ steering-gear chassis bolts.
How many leverage positions are available?Five 1/2-inch end-link holes provide center distances from 12.195 through 16.195 inches.
Which bars are excluded?They are not for RockJock 36-inch by 1-inch or 40-inch by 1-inch sway bars.
Are these sold individually?No. The exact product is sold as a left and right arm pair.
Is the end-link bracket included?No. The double-shear bracket kit, links, torsion bar, bushings, and arm hardware are separate unless explicitly included elsewhere.
Installation Instructions
- Verify the package label and manufacturer part number CE-9904-18M before removing, cutting, or installing components.
- Confirm the exact torsion bar has 25 splines and is not one of the excluded 1-inch bar configurations.
- Measure arm sweep, end-link angle, steering-gear clearance, tire clearance, hoses, wiring, and full suspension travel.
- Install each arm on clean undamaged splines in the required orientation.
- Use the separate compatible arm hardware pack and current RockJock tightening procedure.
- Select the leverage hole that preserves safe link geometry throughout compression and droop.
- Cycle the suspension and steering to verify no contact, binding, or over-center link condition occurs.
- 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
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