Synergy Dual Durometer Bushing (DDB) 4323-01 for 2007-2018 Jeep Wrangler JK

Fitments:
Part # Description Fitment Mounting Width
(A) Bolt Size (D) OD
(C) Housing
Part #
4320-01 LOWER CONTROL ARM BUSHING 8033, 8036, 8046, 8047, 8051, 8052, 8153, 8551-04, 8154, 8231,
8551-01, 8563-01, 8585, 8232 2.618″ 9/16″ / 14MM 2.249″ 4408-01
4320-02 CONTROL ARM BUSHING 8551-02, 8563-02, 8583-02, 8583-04, 8851-01, 8870-01, 8871-01, 8891-05, 8892-06 2.618″ 5/8″ /
16MM 2.249″ 4408-01
4320-03 DODGE LOWER CONTROL ARM BUSHING 8551-03, 8563-03, 8583-03 2.618″ 3/4″ /
18MM 2.249″ 4408-01
4320-04 BRONCO REAR CONTROL ARM BUSHING 7052-01, 7054-01 74MM 5/8″ /
16MM 2.249″ 4408-01
4320-05 BRONCO REAR CONTROL ARM BUSHING 7052-01, 7054-01 70MM 5/8″ /
16MM 2.249″ 4408-01
4321-01 JEEP FRONT UPPER CONTROL ARM BUSHING 8053, 8853-01 2.000″ 1/2″ /
12MM 2.124″ 4410-01
4321-02 JEEP UPPER CONTROL ARM BUSHING 8151, 8152 2.000″ 3/8″ /
10MM 2.124″ 4410-01
4321-03 FRONT UPPER CONTROL ARM BUSHING 8035, 8891-07, 8853-01 2.000″ 1/2″
12MM
2.124″ 4410-01
4322-01** UPPER CONTROL ARM BUSHING 8038, 8054, 8854-01, 8553-01, 8892-08 2.360″ 9/16″ / 14MM 2.124″ 4407-01
4322-02 UPPER CONTROL ARM BUSHING 8038 2.618″ 9/16″ / 14MM 2.124″ 4407-01
4323-01 JEEP TRACK BAR BUSHING 8062, 8068, 8075, 8087, 8233-03 1.600″ 9/16″ / 14MM 1.499″ 4402-01
4323-02 JEEP TRACK BAR BUSHING 8155-01, 8156 1.600″ 1/2″ /
12MM 1.499 4402-01
4324-01* DODGE TRACK BAR BUSHING 8550-01, 8550-02 1.600″ 9/16″ / 14MM 1.624″ 4409-01
4324-02* DODGE TRACK BAR BUSHING 8550-01, 1.600″ 5/8″ / 16MM 1.624″ 4409-01
4324-03 21+ BRONCO REAR TRACK BAR BUSHING 7062-01 2.188″
5/8″ / 16MM 1.633″ 4803-01
4326-02 FRONT UPPER CONTROL ARM BUSHING (AXLE SIDE) 8012-15, 8012-16, 8012-18 2.000″ 1/2″ /
12MM 1.782″ 8012-18 *
4327-01 JEEP TRACK BAR BUSHING 8075-02, 8862-01, 8875-01 1.600″ 9/16″ / 14MM 1.758″ 4409-01
4327-02 FORD TRACK BAR BUSHING 8675-01, 7675-01, 7675-02 1.732″ 13/16″
20MM 1.758″ 8675-01*
4327-03 DODGE RAM 2500/3500 2003-2008 8550-11 1.600 9/16″ / 14MM 1.758″ 4409-01
4327-04 DODGE RAM 2500/3500 2008.5-2013 8550-11 1.600 5/8″ / 16MM 1.758″ 4409-01
4328-02 DODGE RAM 2500/3500
2014+ 8704-01*, 8704-11 1.63″ 3/4″ /
18MM 1.875 4810-01

*Housing only available as part of 8675-01

Specifications:

Part # A
(MOUNTING
WIDTH) B
(SHELL LENGTH) C
(OD) D
(SLEEVE ID)
4320-01 2.618 2 2.267 0.563
4320-02 2.618 2 2.267 0.638
4320-03 2.618 2 2.267 0.717
4321-01 2 1.75 2.135 0.505
4321-02 2 1.75 2.135 0.402
4321-03 2 1.5 2.135 0.505
4322-01 2.32 1.75 2.135 0.563
4323-01 1.6 1.25 1.508 0.563
4323-02 1.6 1.25 1.508 0.525
4324-01 1.6 1.25 1.657 0.563
4324-02 1.6 1.25 1.657 0.638
4327-02 1.732 1.375 1.758 20mm
4328-02 1.6 1.41 1.887 0.717

Features:
Synergy Dual Durometer Bushing (DDB) Series
Feature a maintenance free, grease less design.
Self centering with 30 degrees of misalignment. (4320-01, 4320-02, 4320-03)
Outer “soft” durometer acts as bushing cushion and flex material.
Inner “hard” durometer lining acts as the bearing surface to allow free floating inner sleeve to rotate. Provides for a maintenance free “zero bind” bushing.
Internal bushing ring separates inner and outer materials to prevent inner sleeve gaping at extreme flex.
Direct replacement available for aftermarket control arms using OEM Cleveite style lower control arm bushings.
Bushings available for all suspension components made by Synergy MFG as well as many other companies.
Bushings are sold complete with inner sleeve installed.
Check out the Video!
IMPORTANT: Dual Durometer Bushings (DDB) are not a replacement for Synergy products that originally came with Johnny Joints. These bushings are only replacements for Synergy products that came with Dual Durometer Bushings (DDB). Please call/email for more information on specific products. 805.242.0397 / support@synergymfg.com
Notes:
Parts in red do not yet come with these bushings.
4320-01, 4320-02 and 4320-03 have nylon outer shell.
4324-01 and 4324-02 replacement bushings are only for 8550-01 and 8550-02 Track Bars who came with these bushings. If upgrading from 4306-01 polyurethane bushings, Dual Durometer Bushings (DDB) can be retrofitted one of two ways depending on bolt size:
– 94-07 trucks with 14mm or 9/16″ bolt: Replace with 4323-01 Dual Durometer Bushing (DDB) or use 8529-01 Retrofit Kit.
– 08-13 trucks with 16mm or 5/8″ bolt: Must use 8529-01 Retrofit Kit.
8550-01 track bars built 5/19/2015 and newer and 8550-02 track bars built 2/13/2015 and newer require replacement bushings 4324-01 or 4324-02 depending on bolt size.
4327-03 & 4327-04 are an updated stiffer bushing for the 8550-11
**4322-01 bushing is not a retrofit for 8054 that came with Poly bushing halves. Correct replacement bushing is 4303-01 bushing halves.
*Housing only available as part of 8012-18 kit
More information: www.p65warnings.ca.gov