Dodge Add-A-Leaf Pack 03-13 Dodge Ram 2500/3500 4 Inch Axle Tube Dual Center Pin 4x4 Diesel Synergy MFG

Synergy Manufacturing SKU: FSVG_8516-02-400


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Synergy Add-A-Leaf Pack for 03-13 Dodge Ram 2500/3500 4x4 Trucks improves ride quality on both on and off-road driving.

  • 03-13 Dodge Ram 2500 4x4 Diesel
  • 03-12 Dodge Ram 3500 4x4 Diesel


  • For 11.5 Inch AAM Rear End w/4 Inch Axle Tube w/Dual Center Pin
  • Progressive 5 leaf design replaces the factory overload spring for improved ride quality both on and offroad
  • Eliminates the harsh spring rate ramp up caused by overload engagement
  • High quality 9/16 inch E-coated U-bolts, F436 extra thick hard washers and GR8 tall nuts included
  • Bolt on installation using basic hand tools


  • 8516 Add-a-leaf packs dual center pin
  • 1/2-20 UNFX6.0 inch long replacement center pins
  • 9/16-18 UNFX4.0 inchX11 inch long HD E-coated U-bolts
  • 9/16-18 UNF GR8 tall nuts
  • 9/16 inch ASTM F436 hard washer extra thick


  • The installation of this pack will affect the truck's load carrying characteristics when the factory overload is removed. The owner will notice more squat in the rear when carrying heavy loads. If large loads are frequently hauled, we suggest adding some form of airbag kit in conjunction with this kit for optimum ride and load carrying characteristics.