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Door Buster Jeep Jk (2dr) 3.5" X - Factor X2 Long-arm System + Free Return [vwqfQAHM]

$189.99 $607.99 -69%

The Rock Krawler Suspension JK Wrangler 3.5 inch X - Factor X2 Long-Arm System is the ultimate in compromise between daily driver/hard core off-roader. The X - Factor systems combine the benefits of a full high clearance independent 3 link front susp

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Door Buster Jeep Jk (2dr) 3.5" X - Factor X2 Long-arm System + Free Return [vwqfQAHM]

The Rock Krawler Suspension JK Wrangler 3.5 inch X - Factor X2 Long-Arm System is the ultimate in compromise between daily driver/hard core off-roader. The X - Factor systems combine the benefits of a full high clearance independent 3 link front suspension with a high clearance independent 3 link rear suspension. This is where conventional on road handling meets bad ass off-road ability. Up Front we have our proven 3 - link geometry with larger than factory hardware, a double adjustable front upper arm and wider than factory mounting width at the axle. This makes for an incredibly strong setup that is fit for the highways of America or any trail you may traverse all while providing maximum articulation at peak performance. The rear system uses our tried and true independent 3 link conversion with X2 rear suspension geometry with enhanced rear instant center(s) and rear roll center(s). The new high clearance axle mounts provide 3.5” of ground clearance under the rear axle as compared to stock. The rear upper shock relocation brackets ensure you do not lose any shock or suspension travel. The combination of a full high clearance independent 3 link long arm front suspension and high clearance independent 3 link rear long arm suspension lets you dominate the streets and the trails.

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:

  • Excellent Highway Ride
  • Improved Off-Road Ability
  • 2.25 RRD Shocks Front & Rear
  • High Clearance Independent 3 Link Long Arm Front Suspension
  • High Clearance Independent 3 Link Long Arm Rear Suspension
  • Weld on Long Arm Mounting Brackets with Weld Scheduling just like OEM
  • Heat Shield thermal barrier products, just like OEM to protect the front control arm joints at the frame
  • 3.5” Rear Clearance Gain from the X2 Axle Bracket System
  • Adjustable Rear Anti-Squat Featuring X2 Geometry
  • Designed to be the Ultimate Compromise between On Highway Handling and Hard Core Off-Road Ability
  • Lifetime Warranty Coverage

System Includes:

  • (2)Front frame side weld-on long arm mount
  • (2) Heat Shield Products thermal barrier
  • (1) 1/4” thick laser cut steel cross member
  • (2) Front high clearance adjustable lower control arm
  • (1) Front axle side weld-on control arm bracket
  • (1) Front adjustable upper control arm
  • (1) Front adjustable anti-wobble track bar
  • (1) Front sway bar disconnect kit
  • (2) Front triple rate coil spring
  • (2) Rear frame side weld-on lower control arm mount
  • (2) Rear high clearance adjustable lower control arm
  • (1) Rear double adjustable upper control arm
  • (1) Rear adjustable anti-wobble track bar
  • (1) Rear weld-on dual sport track bar bracket
  • (1) Rear weld-on axle truss
  • (2) Rear frame side weld-on lower control arm mount
  • (2) Rear frame side weld-on shock mount
  • (2) Rear axle side high clearance control arm/shock/sway bar link mount
  • (2) Rear triple rate coil spring
  • (2) Front extended brake line
  • (2) Rear extended brake line

(*DEPENDING ON SHOCK PACKAGE CHOSEN*)

  • Bumpstops are included with all shock options
  • IF YOU CHOOSE NO SHOCKS - BUMPSTOPS CAN BE PURCHASED SEPARATELY - RK07123
  • Twin Tube Shocks / 2.25"RRD shocks

 Shock Information:

  • Generic Front Shock Length – 17.5” Collapsed/ 28” Maximum Extended
  • Generic Rear Shock Length – 16.3” Collapsed/ 26.31” Maximum Extended

Bilstein Shocks:

  • FRONT: RRD04042-B51
  • REAR: RRD04045-B51

RRD Spec'd 2.25" Shocks: IN-HOUSE Designed and built - 2.25" Fluted aluminum construction, hard coat military grade black anodizing, 7/8" shaft, IFP (Internal floating piston), better bushings to achieve better misalignment, fully serviceable and rebuildable

  • RRD Spec Front Shock
  • Part Number RRD02291
  • RRD Spec Rear Shock
  • Part Number RRD02292
  • FULL PACKAGE = RRD02305
Wheel Fitment:
  • We typically recommend 4.5" of backspacing on a wheel used with 33" & 35" tall tires
  • We typically recommend 3.5" of backspacing on a wheel used with 37" tall tires

Tire Fitment:

  • 33" or 35" Tires using OEM fender flares
  • 37" tires if using flat fenders
 General Notes:
  • All lift heights based on Rubicon models for standard style build (i.e. front bumper and winch, rear bumper and full size spare).
  • If building with a spare delete we recommend dropping 1” in coil lift height for the rear.
  • If building an overland or heavily up-fitted build in the back, we recommend upsizing 1” in coil lift height for the rear.
  • We recommend a new front driveshaft if you plan to off-road routinely.(Adam's Drivesahft,Tom Woods,J.E. Reel)
  • Requires removal of the OEM frame side front and rear lower control arm mounts.
  • Requires removal of the OEM frame side front and rear upper control arm mounts.
  • Requires welding of the front and rear frame side long arm mounts.
  • Requires removal of the OEM axle side front upper control arm mount.
  • 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.
  • Requires removal of the OEM rear axle side brackets.
  • Requires welding of the provided rear axle side control arm/shock/sway bar link bracket, track bar bracket and rear axle truss.
  • Requires removal of the OEM frame side rear shock mount.
  • Requires welding of the provided frame side rear shock mount.
  • Rear shocks will require a standard bushing and sleeve just like the rear lower shock bushing and sleeve. We have removed the weakness of the bar pin setup with the supplied rear upper shock mounts.
  • Recommend installing limiting straps to avoid over extension of suspension components after vehicle is all set up.

What Our Customers Say

January 26, 2026

Absolutely no complaints!

An amazing tool for my everyday use.

- Lilian Y..

January 26, 2026

Absolutely no complaints!

So glad I found this. It's perfect.

- Kayden G..

January 26, 2026

Absolutely no complaints!

It’s flawless. No problems at all.

- Miles F..

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