Synergy Dual Durometer Bushing (DDB) Series
Part #: 4320X
Weight: 1 lbs
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 | 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
