The RockJock AntiRock Front Sway Bar Kit is a bolt-on front sway bar solution for JK Wrangler and JK Wrangler Unlimited models, engineered to dramatically improve off-road articulation and traction with no disconnects required.

This kit replaces the factory front sway bar using hand tools and is built around a .850-inch diameter, 4340 heat treated chromoly torsion bar for strength and consistency under hard use. Forged 4140 chromoly frame brackets and forged chromoly offset arms deliver maximum rigidity and clearance, while sealed adjustable end links and Delrin bushings provide quiet, long life operation.

Everything required for installation is included.

Kit Includes

• .850 in. 4340 Heat-Treated Chromoly Sway Bar
• Forged Sway Bar Frame Bracket (LH)
• Forged Sway Bar Frame Bracket (RH)
• Forged Sway Bar Arms
• Adjustable Sway Bar End Links (sealed)
• Delrin Sway Bar Bushings
• Sway Bar Arm Hardware Pack
• Sway Bar Arm Stickers

Important Notes:

• Rubicon Models: JK Rubicons with the factory electronic sway bar require a tuner (AEV ProCal or equivalent) to disable the dash warning light after removal.
• Body Roll: Increased compared to stocknormal for AntiRock systems.
• Street Use: Street-drivable, but handling differs from OEM sway bar.
• End Links: Included links are intended for ~4 lift; rods can be trimmed or swapped for other lengths.
• Frame Width Variation: Some vehicles may require CE-9901D-SP4 shim pack to fine-tune arm spacing and clearance.

Specifications

• Application: Front sway bar replacement
• Torsion Bar Diameter: .850 in.
• Torsion Bar Material: 4340 heat-treated chromoly
• Frame Brackets: Forged 4140 chromoly (bolt-on)
• Sway Bar Arms: Forged chromoly, offset
• End Links: Adjustable with sealed rod ends
• Bushings: CNC-machined Delrin
• Spline Count: 25 spline
• Installation: Bolt-on (no welding required)

Fitment

• JK Wrangler (2-door) Front
• JK Wrangler Unlimited (4-door) Front

Tech Insight

The .850-inch torsion bar provides a firmer effective rate than smaller AntiRock bars, making it ideal for heavier JK platforms while still allowing excellent articulation. Forged components offer superior grain structure and fatigue resistance compared to fabricated alternativesperfect for aggressive trail use and long service life.