RockJock Antirock 20" Fabricated Steel Sway Bar Arms – 25 Spline – Pair
RJ-202007-105
The RockJock Antirock 20" Fabricated Steel Sway Bar Arms are heavy-duty 25-spline arms built for replacement or custom Antirock sway bar systems. Manufactured by RockJock, these laser-cut and welded steel arms measure 20" long and 3/8" thick, giving builders a strong, durable arm with multiple end-link positions for suspension tuning and packaging.
Five 1/2" end-link mounting holes let you adjust the effective lever arm length from 14.195" to 18.195" measured from the center of the splined hole. These arms are replacements for select Jeep Antirock systems and can also be used in universal applications with compatible RockJock 25-spline torsion bars.
Includes:
- (2) 20" Fabricated Steel Antirock Sway Bar Arms
- (2) Arm Stickers
Note: Arm hardware is not included. See RockJock P/N CE-99005A for the compatible arm hardware kit.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | RockJock |
| Part Number | RJ-202007-105 |
| Product Type | Antirock Sway Bar Arms |
| Quantity | Pair |
| Overall Length | 20" |
| Thickness | 3/8" |
| Material | Laser-Cut & Welded Steel |
| Spline Count | 25 |
| End-Link Mounting Holes | 5 |
| End-Link Hole Diameter | 1/2" |
| Hole #1 Center Distance | 14.195" |
| Hole #2 Center Distance | 15.195" |
| Hole #3 Center Distance | 16.195" |
| Hole #4 Center Distance | 17.195" |
| Hole #5 Center Distance | 18.195" |
| Weight | 8 lb. per Pair |
Fitment
Designed for compatible 25-spline RockJock Antirock sway bar systems.
| Application | Fitment |
|---|---|
| Universal Antirock Systems | Compatible with Select 25-Spline Bars |
| Jeep YJ Wrangler Front Antirock | Replacement Arm |
| Jeep TJ Wrangler Front Antirock | Replacement / Compatible Application |
| Jeep LJ Wrangler Unlimited Front Antirock | Replacement / Compatible Application |
Fitment Notes
- Compatible with RockJock 25-spline sway bar torsion bars except the 36" x 1" and 40" x 1" bars.
- These are replacement arms for the YJ Wrangler front Antirock kit.
- Can be used with RockJock P/N RJ-201000-101 Double Sheer End Link Bracket Kit.
- The double-shear bracket adds approximately 1 1/2" of effective arm length and allows up to 1 1/4" of end-link offset.
- Arm hardware is available separately under RockJock P/N CE-99005A.
- Verify sway bar spline count, arm clearance, end-link angle, and suspension travel before installation.
Tech Insight
1. What do the five end-link mounting holes change?
The five mounting positions change the effective lever arm length of the sway bar. Moving the end link closer to the splined pivot generally increases the effective sway bar rate, while moving it farther outward generally softens the effective rate.
2. Will these arms fit any 25-spline RockJock sway bar?
They fit many RockJock 25-spline torsion bars, but RockJock specifically notes that these arms are not for use with the 36" x 1" or 40" x 1" sway bars.
3. Can these arms be used in a custom sway bar build?
Yes. The 20" length, 25-spline center, and five adjustable end-link positions make them useful for universal Antirock systems when the chassis and suspension geometry are properly designed around the arm dimensions.
4. What is the benefit of the double-shear end-link bracket?
RockJock P/N RJ-201000-101 adds approximately 1 1/2" of arm length and allows the end link to be offset up to 1 1/4", giving builders more flexibility when packaging the sway bar around shocks, chassis tubes, and suspension components.
5. Why use fabricated steel sway bar arms?
The laser-cut and welded 3/8" steel construction provides a strong, durable arm for demanding off-road use while also giving custom builders multiple mounting positions for tuning and packaging.
