- Part Number: 8580-04
- Est. Ship Time: Usually Ships By Next Business Day

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The upgrade kit is designed for customers who already have a Synergy Pre-Run kit or Synergy Starter System that want to upgrade to a Long Arm kit for improved on and off-road performance
The Synergy Long Arm kit was designed and engineered from the ground up using a synergistic approach to maximize the Dodge 4x4 truck's on & off road performance
Long arm kit was designed using OEM CAD files for a perfect fitment and enhanced vehicle drivability
Kit can be installed on anything from a completely stock truck to a 6" lift and 12" stroke 3.0" diameter shocks.
Suspension components feature a 2 stage powder coat finish for maximum durability
Lower control arms are manufactured from high quality crush resistant 2.0" X .250 Wall 1026 DOM tubing
Upper control arms are manufactured from high quality 1.75 x .188 Wall 1026 DOM tubing
Synergy Dual Durometer Teflon lined bushings are assembled in control arm assemblies for extended performance & minimized road vibration
Synergy double adjuster sleeve & pinch bolt assembly allows for easy adjustment of control arms without removal from vehicle to provide for easy, perfectly adjusted alignments
100% bolt on components assures an easy, trouble free installation with the use of basic hand tools
Kit Includes:
8581 - 03-13 Dodge Long Arm Bracket (Pair)
8583-04 - 03-13 Dodge Front Lower Control Arms (Pair)
8585 - 03-13 Dodge Front Upper Control Arms (Pair)
Wheel/Tire Fitment Notes:
To prevent front tires from rubbing the control arms at full steering lock, we recommend the following wheel/tire combinations:
- Most* 37 inch tires - wheels must have no more than 4.5 inches of backspacing
- Most* 40 inch tires - wheels must have no more than 3.75 inches of backspacing
* Same size tires will dimensionally vary from manufacturer to manufacturer.
- 8565 Cam Bolt Eliminators recommended for increased strength and extended bushing life
- Upgrading to long arms requires removal of the stock control arm brackets at the frame
SYNERGY MFG PART# : 8580-04
