RockJock AntiRock Front Sway Bar Kit - Jeep XJ Cherokee & MJ Comanche
ROKCE-9900XJF
The RockJock AntiRock Front Sway Bar Kit is a direct bolt-on suspension upgrade for the Jeep XJ Cherokee and MJ Comanche. Designed specifically for off-road performance, the AntiRock replaces the factory front sway bar with a torsion bar system that increases suspension articulation, improves traction, and provides predictable handling on the trail—without ever disconnecting the sway bar.
Unlike traditional disconnect systems, the AntiRock allows both sides of the suspension to work together throughout the suspension's travel. The result is improved stability on uneven terrain, reduced chassis unloading, and increased driver confidence while maintaining excellent street manners.
Built around a .770-inch heat-treated 4340 chromoly torsion bar, this complete kit includes forged chromoly sway bar arms, CNC-machined billet aluminum frame brackets, Delrin bushings, adjustable end links, and all required installation hardware for a straightforward bolt-on installation.
Includes:
- .770" Heat-Treated 4340 Chromoly AntiRock Torsion Bar
- Billet Aluminum Left Frame Bracket
- Billet Aluminum Right Frame Bracket
- Pair of Forged Chromoly Sway Bar Arms
- Adjustable Sway Bar End Links
- Delrin Pivot Bushings
- Sway Bar Arm Hardware Pack
- Nut Plate
- 3/8"-16 × 1-1/4" Hex Bolts
- 3/8" Lock Washers
- 3/8" Flat Washers
- RockJock Arm Stickers
Specifications
| Specification | Details |
|---|---|
| Application | Front Sway Bar System |
| Vehicle Fitment | Jeep XJ Cherokee / MJ Comanche |
| Torsion Bar Diameter | .770" |
| Torsion Bar Material | Heat-Treated 4340 Chromoly |
| Sway Bar Arms | Forged Chromoly Steel |
| Frame Brackets | CNC-Machined Billet Aluminum |
| Bushings | Delrin |
| Spline Count | 25-Spline |
| Installation | Direct Bolt-On |
Fitment
Fits:
- Jeep Cherokee XJ – Front Suspension
- Jeep Comanche MJ – Front Suspension
Installation Notes:
- Direct bolt-on installation with no welding required.
- Supplied end links are intended for approximately 4" of suspension lift.
- End links may be shortened or replaced to suit other lift heights.
- Some vehicles may require the RockJock CE-9901D-SP4 Shim Pack to properly center the sway bar arms due to frame width variations.
Tech Insight
Why Choose an AntiRock?
Unlike factory sway bars that are commonly disconnected for off-road use, the AntiRock remains connected at all times. Its torsion bar design allows both sides of the suspension to work together, reducing chassis unloading while allowing significantly more articulation than a conventional sway bar.
Balanced Trail Performance
The .770" torsion bar is specifically tuned for the weight and suspension characteristics of the XJ Cherokee and MJ Comanche. It provides an excellent balance between body control and suspension flexibility, making it equally at home on technical rock obstacles, trail riding, and daily driving.
Built to Last
Forged chromoly sway bar arms, billet aluminum frame brackets, and self-lubricating Delrin bushings provide years of quiet, maintenance-free operation. Because Jeep frame widths can vary slightly between vehicles, RockJock also offers shim packs to achieve perfect arm spacing when necessary.
