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Dual Durometer Teflon Lined Bushings
  • Dual Durometer Teflon Lined Bushings
  • Bushing Installed
  • Bushing with Steel Outer Shell
  • Bushing with Nylon Outer Shell

Synergy Dual Durometer Bushing (DDB) Series

Part #: 4320X
Weight: 1 lbs
  • Price: $25.00
 
OR

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 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 #DescriptionFitmentMounting Width
(A)		Bolt Size (D)OD
(C)		Housing
Part #
4320-01LOWER CONTROL ARM BUSHING8033, 8036, 8046, 8047, 8051, 8052, 8153, 8551-04, 8154, 8231,
8551-01,
8563-01, 8585, 8232		2.618"9/16" / 14MM2.249"4408-01
4320-02DODGE LOWER CONTROL ARM BUSHING 8551-02, 8563-02, 8583-02, 8851-012.618"16MM2.249"4408-01
4320-03DODGE LOWER CONTROL ARM BUSHING8551-03, 8563-03, 8583-032.618"18MM2.249"4408-01
4320-04BRONCO REAR CONTROL ARM BUSHING7052-01, 7054-0174MM16MM2.249"4408-01
4320-05BRONCO REAR CONTROL ARM BUSHING7052-01, 7054-0170MM16MM2.249"4408-01
4321-01JEEP FRONT UPPER CONTROL ARM BUSHING8053, 8853-012.000"12MM2.124"4410-01
4321-02JEEP UPPER CONTROL ARM BUSHING8151, 81522.000"10MM2.124"4410-01
4321-03FRONT UPPER CONTROL ARM BUSHING80352.000"1/2"2.124"4410-01
4322-01**UPPER CONTROL ARM BUSHING8038, 8054, 8854-01, 8553-012.360"9/16" / 14MM2.124"4407-01
4322-02UPPER CONTROL ARM BUSHING80382.618"9/16" / 14MM2.124"4407-01
4323-01JEEP TRACK BAR BUSHING8062, 8068, 8075, 8087, 8233-031.600"9/16" / 14MM1.499"4402-01
4323-02JEEP TRACK BAR BUSHING8155-01, 81561.600"12MM1.4994402-01
4324-01*DODGE TRACK BAR BUSHING8550-01, 8550-021.600"9/16" / 14MM1.624"4409-01
4324-02*DODGE TRACK BAR BUSHING8550-01, 1.600"5/8" / 16MM1.624"4409-01
4326-02FRONT UPPER CONTROL ARM BUSHING (AXLE SIDE)8012-15, 8012-16, 8012-182.000"12MM1.782"8012-18 *
4327-01TRACK BAR BUSHING8075-02, 8862-01, 8875-01, 8550-111.600"9/16" / 14MM1.758"4409-01
4327-02FORD TRACK BAR BUSHING8675-011.732"20mm1.758"8675-01*
4327-03Dodge 2500
2008.5-2013		8550-111.614mm1.758"
4327-04Dodge 2500 2008.5-20138550-111.755/8 /
16mm		1.627"4409-01
4328-01TRACK BAR BUSHING8704-01  1.63" 18MM1.8754810-01 

*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)
4320-012.61822.2670.563
4320-022.61822.2670.638
4320-032.61822.2670.717
4321-0121.752.1350.505
4321-0221.752.1350.402
4321-0321.52.1350.505
4322-012.321.752.1350.563
4323-011.61.251.5080.563
4323-021.61.251.5080.525
4324-011.61.251.6570.563
4324-021.61.251.6570.638
4327-021.7321.3751.75820mm
4328-011.61.411.8870.717



  
    • SKU
      4323-01
    • Weight
      0.7 lbs
  • Manufacturer
    Synergy Manufacturing
  • Bushing Kit (Includes Inner Sleeve)
    4320-01, 4320-02, 4320-03, 4321-01, 4321-02, 4321-03, 4322-01, 4322-02, 4323-01, 4323-02, 4324-01, 4324-02, 4326-02, 4327-01, 4327-02, 4327-04, 4328-01

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