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RUBICON EXPRESS 3290 MONIER CIR., RANCHO CORDOVA, CA. 95742 866-533-7706,
3.5" SUPER-FLEX SHORT ARM UNIVERSAL KIT
Application Notes:
1. The front engine crossmember must be removed and will not be reinstalled due to drive shaft clearance.
2. Front driveshaft must be removed from front differential to allow for proper droop during installation.
3. It may be necessary that a front CV drive shaft be used in conjunction with this lift on either 2 or 4 door
models. 2 Door models may also require a CV rear drive shaft.
4. Used in conjunction with the following kits: JL7102 3.5" Fixed Arm Kit, JL7142 3.5" Standard Kit, and
JL7147 3.5" Superflex Kit
Safety Warning:
Suspension systems or components that enhance the off-road performance of your vehicle may cause it to handle
differently, on and off-road, than it did from the factory. Care must be taken to prevent loss of control or vehicle
rollover during sudden maneuvers. Failure to drive the vehicle safely may result in serious injury or death to driver
and passengers. We recommend you always wear your seat belt, drive safely and avoid quick turns and other sud-
den maneuvers. Constant maintenance is required to keep your vehicle safe. Thoroughly inspect your vehicle be-
fore and after every off-road use.
Installation Warning:
All procedures described in these instructions were performed while the vehicle was properly sup-
ported on a vehicle lift. Use caution when supporting the vehicle as removing and installing parts
will change the vehicle center weight. Rubicon Express recommends that chassis support jacks are
always used at the front and rear of the vehicle during the installation of a suspension system.
We recommend that certified technicians perform the installations of our products. Attempts to install these prod-
ucts without knowledge or experience may jeopardize the safety of the vehicle. These instructions only cover the
installation of our products and may not include factory procedures for disassembly and reassembly of factory
components. Read instructions from start to finish and be sure all parts are present before disassembling the vehi-
cle. Included instructions are guidelines only for recommended procedures and in no way are meant to be defini-
tive. Installer is responsible to insure a safe and controllable vehicle after performing modifications. Do not per-
form test drives on public roads with partially completed installations. Always double and triple check your work
before use.
ESP WARNING NOTE: The 2018 Jeep Wrangler JL is equipped an Electric Stability Program (ESP).
This system is designed to help control the vehicle in times of uncertain traction conditions and roll
stability. Due to the complex nature of this program Rubicon Express strongly suggest that after lift-
ing the vehicle it is returned to the dealer for a computer "flash" to re address tire size and proper
ESP control settings. Rubicon Express also recommends that you become familiar with the ESP con-
trols and how the different level of settings can help you to keep better control of your vehicle.
WHEEL NOTICE: If using factory wheels it will be necessary to purchase 1.5" wheel spacers to provide proper
clearance to suspension components. Otherwise aftermarket wheels with 4.5" back space measurement will be
required.
REQUIRED TOOLS:
Basic mechanics' hand tools
Vehicle Hoist (Optional)
Wheel Chocks for Ground Installation
INSTALLATION INSTRUCTIONS FOR:
JL7099 2018 & Up 4 DOOR JL WRANGLER
Jack Stands
Floor Jacks
www.Rubiconexpress.com
Revised
11.5.18
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Table of Contents
Summary of Contents for Rubicon Express JL7099
- Page 1 This system is designed to help control the vehicle in times of uncertain traction conditions and roll stability. Due to the complex nature of this program Rubicon Express strongly suggest that after lift- ing the vehicle it is returned to the dealer for a computer “flash” to re address tire size and proper ESP control settings.
- Page 2 Revised 11.5.18 KIT CONTENTS: JL7099 Universal Kit RM43013 Front Coil Shim RM43014 Rear Coil Shim RM60164 3.5” Front Coil Spring RM60166 3.5” Rear Coil Spring RE1151 Rear Sway Bar End Link Kit RE1301 2” Front Lower Bump Stop Kit 70-0374501800 3/8” x 4 1/2” Hex Bolt Gr. 8 RE1303 2”...
- Page 3 Any type of grease will work on the Super-flex joints. Spanner nut tools are available through Rubicon Express (RE3771 & RE3772) if needed for tightening of the joints.
- Page 4 B. Place the front bump stop (RE1301) in the center of the coil spring and raise the small diameter end of the Rubicon Express coil into the upper spring bucket and over the lower spring cup and bump stop. Install front coil shim (RM43013) between the upper isolator and the coil bucket on the passenger side only.
- Page 5 Revised 11.5.18 Photo # 3 Rear track bar bracket and factory track bar (photo 3) A. With the track bar removed from the factory track bar bracket, install (RE1612) with supplied hardware. Do not to tighten 1/2” bolt at this time. B.
- Page 6 Revised 11.5.18 C. Place the rear coils up into the upper mount and over the lower mount. Raise the axle into place just enough to keep the coil spring from falling out. Be sure to realign upper isolator tabs with holes in the upper coil bucket D.
- Page 7 G. Retighten all bolts after 50 miles and again after every off road excursion. H. After all adjustments have been made, Rubicon Express recommends that your local Jeep dealership “flash” the computer to adjust for proper tire size and ESP control settings.
- Page 8 Always avoid sudden sharp turns or abrupt maneuvers and allow more time and distance for braking! Rubicon Express reminds you to fasten your seat belts at all times and reduce speed! We will gladly answer any questions concerning the design, function, maintenance and correct use of our products.
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