The RockJock Universal AntiRock Sway Bar Kit with Steel Arms from RockJock Off Road is designed for heavier rigs, stretched wheelbases, and custom builds that need increased roll control while retaining excellent off-road articulation.

AntiRock sway bars balance suspension movement front to rear, improving traction and stability on uneven terrain with no disconnects required. This is a true fabricator kit, supplying everything needed for installation except the welder.

This kit centers around a 45-inch, .800-inch diameter heat treated chromoly torsion bar, paired with fabricated steel sway bar arms available in 17 in., 18 in., or 20 in. lengths. Steel arms are ideal for hard trail abuse, racing, or builds where durability takes priority over weight savings.

Kit Includes:

• 45 in. .800 in. 4130 Heat-Treated Chromoly Sway Bar
• 43 in. 1 3/4 in. .095 wall Mounting Tube
• Fabricated Steel Sway Bar Arms
  • Choose: 17 in., 18 in., or 20 in.
• Adjustable Sway Bar Links
• Delrin Sway Bar Bushings
• Weld-On Axle Tabs
• Hardware Pack
• Arm Stickers

Specifications

• Sway Bar Length: 45 in. (tip to tip)
• Sway Bar Center Diameter: .800 in.
• Sway Bar Material: 4130 heat-treated chromoly
• Arm Material: Fabricated laser-cut & welded steel
• Arm Length Options: 17 in., 18 in., or 20 in.
• Spline Count: 25 spline
• Application Type: Universal / Fabricator install

Fitment

• Universal application
• Designed for custom rigs, rock buggies, and fabricated suspensions
• Not a bolt-in kit welding required

Tech Insight

The .800-inch torsion bar delivers a firmer AntiRock rate compared to smaller bars, making it well-suited for rear sway bar applications, heavier vehicles, and rigs that see higher-speed trail use.

Steel arm length selection allows further tuning:

• 17 in. arms: Firmest effective rate, compact packaging
• 18 in. arms: Balanced control and articulation
• 20 in. arms: Softest effective rate, maximum articulation

This flexibility makes the 45-inch steel-arm kit a favorite for stretched crawlers, buggies, and competition-style builds.

Important Notes

• Installation: Welding required; universal fabricator kit
• Body Roll: Increased body roll compared to factory sway bars
• Street Use: Street-drivable, but handling differs from OEM sway bars
• End Links: Long-thread links can be trimmed to fit; alternate lengths available