RockJock XJ / MJ AntiRock Front Sway Bar Kit
ROKCE-9900XJF
The RockJock AntiRock Front Sway Bar Kit from RockJock Off Road is a direct bolt on upgrade for XJ Cherokee and MJ Comanche platforms, designed to increase suspension articulation and off-road traction without ever needing to disconnect a sway bar.
AntiRock systems help keep the chassis more level on uneven terrain, reducing that tippy feeling while still allowing the suspension to work freely. This kit replaces the factory front sway bar, installs with basic hand tools, and is built around a 4340 heat treated chromoly torsion bar.
With billet aluminum frame brackets, forged chromoly sway bar arms, adjustable end links, and Delrin bushings, this kit delivers durability, quiet operation, and predictable control both on the trail and during daily driving.
Includes everything required for installation.
Kit Includes:
- Sway Bar Torsion Bar (.770" dia.)
- Billet Aluminum Frame Bracket (LH)
- Billet Aluminum Frame Bracket (RH)
- Forged Chromoly Sway Bar Arms
- Adjustable Sway Bar Links
- Delrin Sway Bar Bushings
- Sway Bar Arm Hardware Pack
- Nut Plate
- 3/8"-16 × 1 1/4" Hex Bolts
- 3/8" Lock Washers
- 3/8" Flat Washers
- Arm Stickers
Specifications
- Application: Front sway bar replacement
- Torsion Bar Material: 4340 heat-treated chromoly
- Torsion Bar Diameter: .770"
- Arm Material: Forged chromoly
- Frame Brackets: CNC-machined billet aluminum
- Bushings: CNC-machined Delrin
- Spline Count: 25 spline
- Installation: Bolt-on (no welding required)
Fitment
- XJ Cherokee – Front
- MJ Comanche – Front
Important Notes
- Body Roll: Increased compared to stock sway bar
- Street Use: Street-drivable, but handling differs from OEM sway bar
-
End Links: Supplied links are intended for ~4" lift
- Links may be trimmed or replaced with shorter/longer versions to suit your setup
- Frame Width Variation: Some vehicles may require CE-9901D-SP4 shim pack for proper arm spacing
Tech Insight
AntiRock sway bars are tuned for off-road performance, not stiff on-road handling. Compared to stock sway bars, AntiRock equipped vehicles will experience more body roll, but benefit from significantly improved articulation and traction off-road. The .770 torsion bar diameter offers a balanced rate well suited for XJ/MJ platforms.
Because factory XJ/MJ frame widths can vary, arm spacing may need fine tuning. RockJock offers shim packs to dial in exact clearance when needed.