Rock Jock 4x4 - Antirock® JKU 4 Door Rear HEAVY Sway Bar Kit with Forged Arms
Overlanders and Racers! We heard you and the wait is over! Our heavy rear bar Antirock Sway Bar Kit for the rear of all JK Wrangler and Unlimited models features a 1 1/8 in. diameter, 28 spline bar! This heavier bar considerably increases the rate of the rear sway bar for those with racks, roof top tents, camping gear, etc. This heavy bar kit is also applicable to desert racing applications. This kit easily bolts on with hand tools and is designed to directly replace the vehicle’s stock rear sway bar. The sway bar is made of 4130 heat treated chromoly for ultimate strength, which is the same quality used in professional off-road competition sway bars.
The Antirock rear sway bar, when used in conjunction with a front Antirock sway bar, provides a more stable feeling cabin and balanced performance of front and rear suspension in rugged off-road conditions. Antirocks gives the driver increased traction by balancing and distributing the weight and traction over all four tires.
JK Wrangler Unlimited (4-door) – All Models
JK Wrangler (2-door) – All Models
1 1/8 in. diameter 4130 heat treated chromoly sway bar
Fabricated steel frame brackets
Forged chromoly sway bar arms
Adjustable sway bar end links w/ sealed ends
Delrin sway bar bushings
Stainless braided extended brake line kit
All required hardware & step-by-step instructions
Body Roll - Being that this kit features our heavy torsion bar, if this kit is used in unloaded vehicles, you may find the rear sway bar to be stiffer than you would prefer. This kit is intended for use on vehicles that are loaded down with a rack, roof top tent, camping gear, etc. If this does not sound like your application, you may be more of a customer for our standard 2-door kit, or our 4-door kit.
End Links - Out of the box, the length of the sway bar’s vertical links that are included in this kit are intended for use with our suspension systems (4 in. lift). Depending upon your specific vehicle’s lift, you may obtain shorter or longer links to suit, here. Additionally, all of the link rods may also be trimmed in length for fine tuning purposes.
Wheel & Tire Clearance - If stock JK wheels are being retained, a 1.5 in. wheel spacer is required for proper tire clearance of the Antirock sway bar end links. Aftermarket wheels should have a minimum of a 4.5 inch back spacing for proper tire clearance of the Antirock sway bar end links.
Sway Bar Torsion Bar: RJ-204001-1
Fabricated Steel Frame Bracket (LH): CE-9900JKR-BL
Fabricated Steel Frame Bracket (RH): CE-9900JKR-BR
Forged Sway Bar Arms (pair): RJ-202004-103
Adjustable Sway Bar End Links: RJ-203005-101
Delrin Sway Bar Bushing: RJ-207001-1
Sway Bar Arm Hardware Pack: CE-99005A
Stainless Braided Brake Line Kit: CE-9807RBLK
Sway Bar Arm Stickers: CE-9807RBLK