JKS 2210 User Manual
INSTALLATION
INSTRUCTIONS
517-278-1226 • tech@jksmfg.com • www.jksmfg.com
491 W. Gareld Avenue, Coldwater, MI 49036
Product: Adjustable Coil Spacers (ACOS™)
Part Number: JKS2210
Welcome
CONGRATULATIONS on your purchase of a new JKS
ACOS™ system! At JKS Manufacturing, we are committed
to providing you with the best products available and your
satisfaction is our rst priority.
PLEASE READ these Installation Instructions carefully,
and save them for future reference, as they contain impor-
tant installation and maintenance information.
Tools Required
Hydraulic Floor Jack and Jack Stands
Metric/Standard Socket Wrench Set
(including a 17mm socket)
6” Socket Extension
8mm and 1/4” Allen Wrenches
Die Grinder with Cut-Off Wheel
(or reciprocating saw)
Grinding Wheel (or similar tool)
File or Deburring Tool
Emory Cloth (or similar paint stripping tool)
1/4” Drill Bit
Rubber or Plastic Mallet *
Tape Measure
Spray Lubricant (WD-40 or similar)
Anti-Seize Lubricant
Medium Strength Threadlocker
Coil Spring Compressor *
Factory Service Manual (recommended)
* Asterisk denotes tools that are not required for some applica-
tions. Thoroughly read instructions rst to determine which tools
will be required for your application.
Important
MOST VEHICLES REQUIRE additional parts or modi-
cations to accommodate the immediate increase in
ride height provided by the ACOS system.
DO NOT EXCEED maximum range of adjustment – see
illustration on page 3.
NOT COMPATIBLE with Rancho, TrailMaster, Rough
Country or Fabtech coil springs.
Parts
JKS2 210JKS Adjustable Coil Spacer Installation
Page 1
Description QTY
A
Threaded Tube 2
B
Adjuster Ring 2
C
Isolator Pad 2
D
5/16” x 1-1/4” Cap Bolt 2
E
Bump Stop Adapter 2
F
Bump Stop Plug 2
G
Polyurethane Bump Stop 2
H
10mm x 55mm Cap Bolt 2
I
3/8” Flat Washer 2
J
10mm Locking Nut 2
Installation
1. REMOVE FRONT COIL SPRINGS
Remove the front coil springs per the factory ser-
vice 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
Locate the factory weld that secures the bump
stop holder to the upper coil spring retainer.
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™.
Pry the rubber bump stop (jounce bumper) free
from the bump stop holder.
Remove the rubber isolator pad from the upper
coil spring retainer.
2 Page
JKS2 210
Cut away the bump stop holder immediately above
the weld as illustrated. HI NT: 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 le or deburring
tool is useful for removing sharp edges.
JKS Adjustable Coil Spacer Installation
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