phone: 5182709822

LEAD TIMES:  Basic part orders 5-10 Business Days. Complete Short Arm/Mid Arm Systems 2-4 Weeks. Coil Over or Standard Long Arm Systems 3-5 Weeks.  Customized Orders 6-8 Weeks. (This is to Ship from Time of Order)

4.5" TJ X-Factor X2 Flat Belly Coil Over Long Arm System W/ 5" Stretch

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The Rock Krawler Suspension TJ Wrangler 4.5 inch X-Factor X2 Flat-Belly COILOVER Long-Arm System W/ 5" Stretch is a massive evolution to long arm systems for TJ and LJ Wranglers. This incredible system allows you to add a full, weld-in Coilover system front suspension, and keep a traditional spring and shock rear setup. In addition, this system allows a 5" rear stretch via longer upper and lower control arms. Precisely measured for a TJ! We led the way with the Revolutionary X-Factor Long Arm design featuring the industry's first Independent 3-Link Front and Triangulated 4-Link Rear Suspension Design Ever! The X-Factor Long Arm design has stood the test of time and has been mimicked by many other companies in its 20+ year history! How do we as an industry leader blow something out of the water that has done so well for so long? The answer is the all new TJ/LJ X Factor X2 Flat Belly Long Arm Systems. The industry’s only full flat belly long arm system where all the arms tuck up right inside the frame! The X-Factor X2 geometry is enhanced above and beyond our old X-Factor Long Arm, adding more double triangulation to the rear for even better stability. The ride quality has also improved by adding our Adventure Series Joints to the frame side of the lower control arms and thus reducing overall system maintenance. The newer Pro-X Krawler Joints with the one piece BASF thermo-elastomer material round out the joints used in the system for an unbelievable 95 degrees of misalignment or more, available on each and every control arm in the system. Of course, these systems come with our technologically advanced and tuned Triple Rate Coils Front and Rear. No one can beat this combination of cross over angles, ground clearance gains, ride quality, tuned suspension performance, durability and our abuse proof lifetime warranty on all hard parts. The Rock Krawler X-Factor X2 Flat Belly Long Arm System is paving the way for future TJ and LJ Builds.

When we design a system, our goal is to provide you with the most comprehensive solution and the best geometry, install exceptional value, and be the foundation for every adventure whether it be on the Street, In tow, or down a Trail!  Thank you for considering Rock Krawler Suspension 

System Benefits:

  • Maintenance Free/ High Ability Control Arms Featuring our Award Winning Adventure Series Joints
  • Full Flat Belly Long Arm System
  • The Best Cross Over Angle Long Arm System Available
  • The Best On Road and Off Road Long Arm Geometry Available
  • Excellent Highway Ride and Handling
  • High Misalignment Lower Control Arms
  • Tuned Triple Rate Coil Springs Front and Rear
  • Independent Front 3 Link Geometry
  • Double Triangulated Rear 4 Link Geometry
  • Pro Front Sway Bar Disconnects
  • Abuse Proof Lifetime Warranty on all Hard Parts
  • Upgradeable to Coil Overs/Stretch Systems or Rockzilla
  • Lifetime Warranty Coverage

System Includes:

  • (2) Tuned 2.625 RRD remote reservoir coilovers
  • (2) Tuned 2.25 RRD remote reservoir shocks
  • (1) Pair of front coil over mounts
  • (4) Triple rate coil springs
  • (4) High misalignment/adjustable lower long arms
  • (1) Adjustable front upper control arm
  • (1) High misalignment/adjustable front track bar
  • (2) Front adjustable sway bar disconnects
  • (2) Front sway bar link straps
  • (1) Skid plate and skid plate mounting brackets
  • (2) Rear upper triangulated 4 link arms
  • (1) Rear triangulated 4 link mounting cradle/axle truss
  • (3) Extended stainless steel brake lines
  • (2) Extended rear sway bar links
  • (1) Front track bar relocation bracket
  • (1) Drop pitman arm 


  • Bumpstops are included with all shock options

 Shock Information:

  • Generic Front Shock Length – 19" Collapsed/ 32" Maximum Extended
  • Generic Rear Shock Length –  18" Collapsed/ 29" Maximum Extended

Remote Reservoir 2.625" Coilover Shocks: Remote reservoir standard, IFP construction, MASSIVE 2.625" shock bodies, fluted aluminum bodies, 1" shaft, 1.25" mounting width, hard coat military grade black anodizing, fully serviceable and rebuildable. 

  • RRD Spec Front Remote Reservoir Coilover
  • Part Number RK04720RR
  • RRD Spec Remote Reservoir 2.25" (NON-Coilover) Rear Shock
  • Part Number RRD02311RR
Wheel/ Tire Fitment:
  • Typical wheel fitment for a 12.5 inch wide tire on a 8” to 9” wide wheel with 3.75 inches of backspacing or less for stock axle applications.
 General Notes:
  • Requires minimum of 65.5 WMS (JK WMS) with 3.5 inch Backspace Wheels
  • Includes hardware and detailed instructions
  • Designed for OEM axles and OEM axle control arm mounting widths (Dana 30/44). For use with axles that will not be able to achieve OEM lower control arm mounting widths please call as it will require customized lower control arm bend profiles similar to how we do Rockzilla Systems and Upgrades.
  • Requires a SYE with C.V. Driveshaft
  • With long rear uppers, a custom cat back exhaust is required
  • Requires removal of the OEM rear upper control arm mounts off the rear axle
  • Recommend using rear shock relocation brackets or rear shock shifters for some applications
  • Requires Artec or Motobilt HD Body Mounts that raise the body 1.25” and a small motor mount lift or 1.5” Body Lift/Motor Mount Lift or Greater.
  • Remember to combine suspension lift height and body lift height or body mount replacement and your total lift height to achieve your desired overall all tire clearance.
Drive Type::
Compatible Engine Options::
4.0 Inline 6 Cylinder
Fuel Type::