Home » Jeep Lift Kits & Suspension » Lift Kits » Spring Lift Kits » Rock Krawler JK55XFLA-4 X Factor Long Arm System 5.5" for 07-17 Jeep® Wrangler Unlimited JK 4 Door

Rock Krawler JK55XFLA-4 X Factor Long Arm System 5.5" for 07-17 Jeep® Wrangler Unlimited JK 4 Door

Catalog #: 16189.2021
Rock Krawler Part #: JK55XFLA-4
Description
The Rock Krawler Wrangler JK 5.5” X Factor Long Arm System is the best performing trail suspension for JK owners looking to run up to a 37” tall tire! The steering geometry has been engineered to provide you with stock on highway handling characteristics. What makes this long arm system stand out above all the rest is the Revolutionary Independent Three Link conversion front and rear. This has become a Rock Krawler Suspension trade mark. All of our Jeep Long Arm systems feature this very same design up front. On the new Wrangler JK’s we used it in the rear as well so no gas tank modifications would be required. The Independent Three Link has been proven as the best suspension design for high articulation demands while maintaining precise street control. There is no limit to what you can do with the Wrangler JK X Factor Long Arm System. No detail has been overlooked. The rear features adjustable anti-squat so you can tune your JK for your off-road pleasure. All the lower control arms are double adjustable, have high clearance and are made from 2” solid alloy steel for extreme use. We provide you with even the little things such as rear shock relocation brackets that move the rear shocks up 2” for better ground clearance and front spring retainer clips so your front coils springs do not fall out under high articulation. Like all other X Factor Mid Arm and Long Arm Systems for the Wrangler JK, the rear axle has been moved back 1” to allow for greater clearance between the tire and factory sliders for Rubicon Owners. This system is completely upgradeable to any other Rock Krawler Wrangler JK System and comes with our exclusive Abuse Proof Lifetime Warranty on all hard parts!
Details

System Benefits:

  • High Clearance Lower Control Arms
  • Excellent Highway Ride and Handling
  • Independent 3 Link Conversion Front and Rear
  • Adjustable Anti-Squat Feature
  • Rear Shock Relocation Brackets
  • Front Spring Retainer Clips
  • Drag Link Flip Kit
  • H.D. Drag Link
  • Rear Heim Jointed Sway Bar Links
  • Rear Coil Spring Degree Wedges
  • Bomb Proof Front Track Bar Bracket Assembly

with Stabilizer Relocation Hole!

  • Bomb Proof Rear Track Bar Bracket
  • The Best Off Road Ability of any Long Arm System
  • Allows for 37 Inch Tires
  • Abuse Proof Lifetime Warranty on All Hard Parts
  • Upgradeable to any other Rock Krawler System

System Includes:
(2) long travel linear front coil springs, double adjustable front track bar made from 1.5” solid alloy steel, precision welded front track bar relocation bracket, (1) front track bar bracket support with stabilizer relocation hole, (2) high clearance-adjustable front lower control arms made of 2.0” solid alloy steel, (1) high misalignment–adjustable front upper control arm made from 1.625” solid alloy steel, adjustable front sway bar disconnects, front long arm mounts and cross member made from 1/4" thick laser cut steel, H.D. drag link assembly, (2) long travel linear rear coil springs, double adjustable rear track bar made from 1.5” solid alloy steel, precision welded rear track bar relocation bracket made from ¼” thick laser cut steel, (2) high clearance-adjustable rear lower control arms made of 2.0” solid alloy steel, (1) high misalignment–double adjustable rear upper control arm made from 1.625” solid alloy steel, (1) rear independent 3rd link mount made of 1/4" thick laser cut steel, (1) weld on rear axle cradle with adjustable anti-squat, rear long arm mounts made from 1/4" thick laser cut steel, rear extended sway bar links, long travel stainless steel brakes front and rear, rear coil spring degree wedges, hardware and detailed instructions.
General Notes:

  • Will require the purchase of an OEM inner TRE at the pitman arm connection for the H.D. Drag Link Assembly. The OEM part number is 52060049AE.
  • Welding of the Rear Cradle, Rear Third Link Mount, Rear Shock Relocation Brackets, Front and Rear Long Arm Mounts is required.
  • Removal of the OEM lower control arm mounts front and rear is required.
  • Removal of the front upper control arm mount on the driver side is required.
  • Minor exhaust rerouting required before the collector on the driver's side. This is recommended to be done prior to the suspension system being installed.
  • Choose your bump stop lengths after you choose your wheel/tire and fender combination.
  • Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up.

Shock Notes:
It is recommended that high quality shocks be used with all Rock Krawler Suspension Systems.

Installation Notes
Installation Difficulty:
Level 3Advanced
Installation Time: 6-8 hours
Parts Included

(4) Long travel functional multi rate coil springs
(4) High clearance-adjustable lower control arms made of 2.0" 7/16 Wall DOM alloy steel
(2) Double adjustable track bars made from 1.5" solid alloy steel with Anti-Wobble joints
(4) Long arm mounts and cross member made from 1/4" thick laser cut steel
(2) High misalignment adjustable upper control arms made from 1.625" solid alloy steel
(1) Rear independent 3rd link mount made of 1/4" thick laser cut steel
(1) Weld on rear axle truss with adjustable anti-squat
(1) Front and rear track bar relocation bracket made from thick laser cut steel
(1) Off-Road pro drag link
(1) Adjustable front sway bar disconnects
(2) Rear extended sway bar links
(4) Long travel stainless steel brakes
(1) Pair of sway bar straps
(2) Rear coil spring degree wedges
(2) Front spring retainer clips, hardware and detailed instructions

  • Features: Adjustable Control Arms, Front Sway Bar Disconnects, Long Arm
  • Shocks Included: Without Shocks
  • Max Tire Size: 37
  • Lift Height Range: 5 inch and up
  • Included Parts: Axle Truss, Extended Brake Lines, Front Lower Control Arms, Front Track Bar, Front Upper Control Arms, Rear Axle Truss, Rear Lower Control Arms, Rear Track Bar Bracket, Rear Upper Control Arms, SKID PLATE, Sway Bar Endlinks
  • Jeep Wrangler Unlimited 4-Door (JK)

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