RockJock Antirock Forged 4140 Chromoly Sway Bar Arms 15in Long 2.5in Offset w/ Stickers - Pair

The RJ-202001-103 is a pair of forged 4140 chromoly Antirock sway bar arms from RockJock, measuring 15 inches in overall length with a 2.5-inch offset bend. Designed for universal fit across all 25-spline Antirock torsion bar applications, the RJ-202001-103 arms are the same forged chromoly components found inside RockJock's bolt-in Antirock kits for Jeep JL Wrangler, JK Wrangler, TJ Wrangler, LJ Unlimited, Jeep Gladiator JT, and first-generation Ford Bronco platforms. Sold as a pair with arm stickers included.

Forged 4140 Chromoly I-Beam Construction

The RJ-202001-103 uses a forged I-beam profile throughout the arm body, giving them dramatically higher strength and rigidity than fabricated or bent-steel alternatives. The 4140 chromoly material is heat-treated to deliver the toughness required in rock crawling and extreme off-road use where sway bar arms experience constant shock loads and torsional stress. At the torsion bar end, the arm is 3/4 inch thick with a 25-spline bore and a vertical pinch bolt hole for a solid, rattle-free attachment to the bar. At the end link mounting end, the arm tapers to 3/8 inch thick and provides three 1/2-inch end link mounting holes, giving you the ability to adjust leverage on the torsion bar to tune your suspension stiffness for your specific build and tire size.

2.5 Inch Offset Bend

The 2.5-inch offset in the RJ-202001-103 is engineered to provide component clearance in the tight packaging environments common to JL, JK, and TJ front Antirock installations. The offset moves the end link attachment point inward relative to the torsion bar centerline, addressing frame, shock, and control arm clearance issues that a straight arm would not resolve. This geometry matches the factory arm configuration used in RockJock's complete kits, so swapping to the RJ-202001-103 as a replacement or upgrade preserves the original tuning intent of the kit.

Universal Fit Across 25-Spline Antirock Bars

The RJ-202001-103 fits any Antirock torsion bar with a 25-spline interface. This covers the full range of RockJock's common torsion bars used in JL, JK, TJ, LJ, JT, and G6 Bronco Antirock kits. They also work in custom builds and rock buggies using 25-spline bars from RockJock or compatible sources. For builders using the RJ-201000-101 Double Shear End Link Bracket Kit, the RJ-202001-103 arms can be used in conjunction with that bracket to add 1.5 inches of effective arm length and up to 1.25 inches of end link offset adjustment.

Finish and Stickers

The RJ-202001-103 arms are finished in a textured gloss black powder coat for corrosion resistance and durability. A pair of RockJock Antirock arm stickers is included with every set.

What's Included

• 2 x RJ-202001-103 forged 4140 chromoly Antirock sway bar arms (one pair)
• 2 x RockJock Antirock arm stickers (one pair)

Note: End links, hardware kit, and torsion bar are sold separately. For the complete hardware kit, see RockJock CE-99005A. For end links, see RockJock's Antirock end link catalog.

Compatible Kits (Arms Are Included In)

Product Specifications

Frequently Asked Questions

What vehicles does the RJ-202001-103 fit?
The RJ-202001-103 is a universal arm that fits any Antirock torsion bar with a 25-spline interface. In practice, this covers Jeep Wrangler JL, JK, TJ, and LJ Unlimited front and rear Antirock kit applications, Jeep Gladiator JT front Antirock kits, first-generation Ford Bronco (G6) front Antirock kits, and any custom build using a 25-spline RockJock Antirock torsion bar. If your Antirock bar has 28 splines, you need a different arm such as the RJ-252201-103.

Are the RJ-202001-103 arms a direct replacement for the arms that came in my RockJock Antirock kit?
Yes. The RJ-202001-103 is the same forged chromoly arm included in the CE-9900JLF, CE-9900JKF, CE-9900TJR, and RJ-286100-101 Antirock kits, among others. If you bent, cracked, or lost an arm from one of those kits, the RJ-202001-103 is the correct replacement part. Confirm your kit number against the compatible kits table above before ordering.

Do the RJ-202001-103 arms come with end links or mounting hardware?
No. The RJ-202001-103 includes only the pair of forged arms and a pair of stickers. End links, pinch bolts, and other installation hardware are sold separately. For a complete hardware kit for existing Antirock bars, RockJock offers the CE-99005A arm hardware kit. End links are available separately in the RockJock catalog in various lengths to suit your lift height.

What is the difference between the RJ-202001-103 forged arms and the fabricated steel arms?
The RJ-202001-103 uses a forged I-beam construction from 4140 chromoly, which produces a denser grain structure and higher strength-to-weight ratio compared to laser-cut or bent fabricated steel arms. The forged arms are 3/4 inch thick through the body versus 3/8 inch for typical fabricated arms, making them significantly more resistant to bending under extreme suspension articulation and rock crawling impacts. The trade-off is higher cost. For standard trail use and wheeling, fabricated arms are sufficient; for extreme competition or high-impact use, the forged RJ-202001-103 arms are the better choice.

Can I use the RJ-202001-103 arms with the RJ-201000-101 Double Shear End Link Bracket Kit?
Yes. The RJ-202001-103 arms are compatible with RockJock's RJ-201000-101 Double Shear End Link Bracket Kit. Adding this bracket increases effective arm length by 1.5 inches and provides up to 1.25 inches of additional end link offset adjustment, which is useful in builds where more leverage on the torsion bar is needed or where clearance is tight.

How does the 2.5 inch offset on the RJ-202001-103 help with component clearance?
The offset bend moves the end link attachment point inward toward the vehicle centerline relative to the torsion bar mounting point. On JL, JK, and TJ applications, this geometry keeps the arms clear of the front differential cover, control arm mounts, and frame rails that a straight arm would contact at full compression. The 2.5 inch offset on the RJ-202001-103 matches the geometry used in RockJock's complete bolt-in kits for these platforms.

Does the RJ-202001-103 work on a Jeep TJ rear Antirock setup?
Yes. The CE-9900TJR TJ/LJ Unlimited rear Antirock kit includes the RJ-202001-103 forged arms as its standard arm component. If you are building a custom rear Antirock setup on a TJ or LJ using a 25-spline bar, the RJ-202001-103 arms will fit. Note that rear Antirock installations on TJ and LJ vehicles typically require some trimming of inner fender liners and, in some cases, minor sheet metal work for full arm up travel clearance.

What warranty does RockJock offer on the RJ-202001-103?
RockJock backs their Antirock components against defects in materials and workmanship. Contact RockJock directly at rockjock4x4.com for full warranty terms. Damage from improper installation, impact with obstacles during use, or racing is not covered under a standard defects warranty. The RJ-202001-103 is intended for off-road use, and some body roll increase compared to a stock sway bar is expected behavior, not a defect.

California Proposition 65 Warning

WARNING: This product can expose you to chemicals including lead and chromium, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov.