Synergy 8054 - Jeep JK Rear Upper Control Arms - Manual

SYNERGY MFG. 870 INDUSTRIAL WAY, SAN LUIS OBISPO, CA (805) 242-0397
PPM-8054 JK REAR UPPER CONTROL ARMS
Version 1.1
GENERAL NOTES:
• These instructions are also available on our website; www.synergymfg.com.
Check the website before you begin for any updated instructions and additional
photos for your reference.
• The installation of these control arms will allow you to correctly align the rear
axle and pinion angle after a suspension lift kit is installed.
• These control arms feature a double adjuster sleeve which allows you to adjust the
length of the arm without removing the arm from the vehicle.
1. The control arms are pre-assembled to the shortest length. Make any length
adjustments by only turning the adjuster sleeve so there is equal thread on the flex
joint and adjuster sleeve. Make sure the grease zerk on the flex joint is aligned with
the pinch bolt on the control arm.
2. We recommend that you preset the length of the upper control arms before
installation. We assume you are also using adjustable lower control arms and are
installing these upper control arms to point the pinion up for the installation of a CV
style rear driveline. We recommend that the lower control arms be set to a length of
20.25” center to center of the bushings. The length of the uppers will depend on the
desired pinion angle; the following table will give you a good starting point to set the
length of the upper control arms. Pinion angle adjustment should be made with the
upper control arms, keep the lower at 20.25”.
UCA LENGTH WHEN USING 20.25”LCA LENGTH, & 3-4.5” LIFT
VEHICLE TYPE PINION ANGLE UPPER CONTROL ARM LENGTH
4 DR WITH CV 10 DEG 18.25”
2 DR WITH CV 15 DEG 18.75”
3. Remove the existing upper control arms.
4. Install the new control arms with the bushing at the frame end and the flex joint at the
axle end. Position the arm with the pinch bolt and the grease zerks on the bottom of
the control arm. Reuse the factory mounting bolts.