JKS 2710 User Manual

DESCRIPTION

QTY

A

Threaded Tube

2 B Adjuster Ring

2

C

5/16” x 1-1/4” Cap Bolt

2

D

Isolator Pad

2 E Bump Shock Adapter

2 F Bump Shock Nut

2 G Bump Shock Assembly

2

Installation

Instructions

Product: ACOS Pro™
Part Number: PN 2710
Application: Jeep Wrangler JK, 2007+ (front only)

Important

MOST VEHICLES REQUIRE additional parts
or modifications to accommodate the
immediate increase in ride height provided by
the ACOS Pro™ system.

DO NOT EXCEED maximum range of
adjustment – see illustration on page 3.

NOT COMPATIBLE with Rancho, TrailMaster,
Rough Country or Fabtech coil springs.

INSTALLATION of this product is not
reversible and should only be performed by an
experienced mechanic or fabricator.

Parts

Welcome

CONGRATULATIONS on your purchase
of a new JKS ACOS Pro™ system! At JKS
Manufacturing, we are committed to providing
you with the best products available and your
satisfaction is our first priority.

PLEASE READ these Installation Instructions
carefully, and save them for future reference,
as they contain important installation and
maintenance information.

Before You Begin…

1. Familiarize yourself with the supplied parts
as illustrated in the column to the far right.

2. Thoroughly read all procedures to ensure
you have the tools and experience
necessary to complete this installation.

3. If you are not completely comfortable with
any of the procedures described on the
following pages, do not attempt this
installation. Contact the JKS Technical
Department at [phone] to locate a
qualified installation specialist in your area.

Tools Required

 Hydraulic Floor Jack and Jack Stands
 Metric/Standard Socket Wrench Set
 1/4” Allen Wrench
 Die Grinder with Cut-Off Wheel

(or reciprocating saw)

 File or Deburring Tool
 Emory Cloth (or similar paint stripping tool)
 Rubber or Plastic Mallet *
 Tape Measure
 Spray Lubricant (WD-40 or similar)
 Anti-Seize Lubricant
 Medium Strength Threadlocker
 Satin Black Spray Paint
 Welding Equipment
 Band Saw (or equivalent) *
 16TPI Thread Restoring File (or equivalent) *
 Coil Spring Compressor *
 Factory Service Manual (recommended)

* Asterisk denotes tools that are not required for some
applications. Thoroughly read instructions first to
determine which tools will be required for your
application.

JKS ACOS Pro™ Installation PN 2710 Page 1 of 5

Installation

 1. REMOVE FRONT COIL SPRINGS

 Remove the front coil springs per the factory

service manual instructions for your vehicle.

HINT: A coil spring compressor is useful for
removal.

Depending on the application, it may be
necessary to completely or partially remove any
of the following components before spring can
be free from upper mount.

 Shock Absorber
 Swaybar
 Brake Line
 ABS Wire

 2. PREPARE SPRING RETAINER

The factory bump stop holder is welded to the upper
spring retainer and must be permanently removed in
order to install the ACOS Pro.

 Pry the rubber bump stop (jounce bumper) free

from the bump stop holder.

 Remove the rubber isolator pad from the upper

coil spring retainer.

 Locate the factory weld that secures the bump

stop holder to the upper coil spring retainer.

 Cut away the bump stop holder immediately

above the weld as illustrated.

HINT: A die grinder with cut-off wheel or
reciprocating saw is useful for cutting away the
bump stop holder.

 Remove any sharp edges from the cut portion

of the upper spring retainer.

HINT: A file or deburring tool is useful for
removing sharp edges.

 3. SHORTEN THREADED TUBE OF

ACOS PRO

On vehicles with 0 - 2.0” front coil springs, it will be
necessary to shorten the Threaded Tube (A) to provide
sufficient clearance between Bump Shock Assembly (G)
and axle pad. This step will also reduce the maximum
adjustment height from 3.5” to 2.5”.

IMPORTANT: Disregard this step on vehicles with

2.5” springs or taller, as this modification will not be
necessary.

 Measuring 1.0” from the threaded end, mark a

line on the Threaded Tube (A).

 Remove the excess portion by cutting

completely through the Threaded Tube (A) at
the location marked in the previous step.

HINT: A band saw is useful for cutting the
Threaded Tube, although a sharp hack saw
with an appropriate fine tooth blade or cutting
wheel may also be used. Use extreme care to
avoid damaging remaining threads.

 Inspect end of Threaded Tube (A) for damaged

threads and repair as needed. HINT: A 16TPI

thread restoring file or equivalent is useful for
repairing threads.

 Remove all of the factory paint from the surface

of the upper spring retainer.

JKS ACOS Pro™ Installation PN 2710 Page 2 of 5

HINT: Emory cloth or a suitable stripping tool is
useful for paint removal.