Synergy Dual Durometer Bushing (DDB) Series

Synergy Dual Durometer Bushing (DDB) Series

$30.00 USD
$30.00 USD
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  • 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 Clevite 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


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 DODGE LOWER CONTROL ARM BUSHING  8551-02, 8563-02, 8583-02, 8851-01 2.618" 16MM 2.249" 4408-01
4320-03 DODGE LOWER CONTROL ARM BUSHING 8551-03, 8563-03, 8583-03 2.618" 18MM 2.249" 4408-01
4320-04 BRONCO REAR CONTROL ARM BUSHING 7052-01, 7054-01 74MM 16MM 2.249" 4408-01
4320-05 BRONCO REAR CONTROL ARM BUSHING 7052-01, 7054-01 70MM 16MM 2.249" 4408-01
4321-01 JEEP FRONT UPPER CONTROL ARM BUSHING 8053, 8853-01 2.000" 12MM 2.124" 4410-01
4321-02 JEEP UPPER CONTROL ARM BUSHING 8151, 8152 2.000" 10MM 2.124" 4410-01
4321-03 FRONT UPPER CONTROL ARM BUSHING 8035 2.000" 1/2" 2.124" 4410-01
4322-01** UPPER CONTROL ARM BUSHING 8038, 8054, 8854-01, 8553-01 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" 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
4326-02 FRONT UPPER CONTROL ARM BUSHING (AXLE SIDE) 8012-15, 8012-16, 8012-18 2.000" 12MM 1.782" 8012-18 *
4327-01 TRACK BAR BUSHING 8075-02, 8862-01, 8875-01, 8550-11 1.600" 9/16" / 14MM 1.758" 4409-01
4327-02 FORD TRACK BAR BUSHING 8675-01 1.732" 20mm 1.758" 8675-01*
4327-03 Dodge 2500
2008.5-2013		 8550-11 1.6 14mm 1.758"
4327-04 Dodge 2500 2008.5-2013 8550-11 1.75 5/8 /
16mm		 1.627" 4409-01
4328-01 TRACK BAR BUSHING 8704-01   1.63"  18MM 1.875 4810-01 

*Housing only available as part of 8675-01 
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. 
  • **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

Specifications:

4320-REF-DIAG.jpg


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
4328-01 1.6 1.41 1.887 0.717