2003-2009 Cummins 3" Long Arm System (8503-11)

Fits:

Engineered and manufactured in the USA, This 3" Long Arm System is designed to increase performance, stability, and ride quality both on and off-road. Featuring massive 2" diameter Front Lower Long Arms that offer best-in-class ground clearance and allow the use of larger tires without rubbing.

No bump stop spacers are required. Long arms and track bar feature zero maintenance Dual Durometer Bushings (DDB) for increased longevity and vibration dampening and accommodate up to 37" tall tires.

Part Number: 8503-11

• Progressive wound coil spring manufactured using the latest in CNC hot winding technology for optimized on and off road performance
• HD sway-bar links correct sway bar geometry and maximize stability
• HD rear shackles provide a minimal amount of lift while keeping the rear driveline angles correct
• Synergy double adjuster sleeve pinch bolt assembly allows for adjustment of control arm and track bar length without removal
• Heavy duty front track bar made from high quality 1.5X.250" Wall 1026 solid tubing allows centering of front axle when using a suspension lift
• Lower adjustable long arms are manufactured from high quality crush resistant 2.00X.250" Wall 1026 DOM tubing
• Upper adjustable control arms are manufactured from high quality crush resistant 1.75X.188" Wall 1026 DOM tubing
• Long arms feature Synergy Dual Durometer Bushings (DDB) with Teflon bearing surface for a maintenance free design focusing on performance, flex, longevity, and ride quality.
• Rear add-a-leaf pack is a progressive 5 leaf design that replaces the factory overload spring for improved ride both on and off road
• Cam Bolt Eliminator Kit takes the place of stock control arm cam bolts when upgrading to adjustable control arms for improved reliability
• Suspension components feature an abrasion-resistant Powdercoat finish for maximum durability and corrosion resistance

Includes:

• 8515-11 Synergy Front Sway Bar Links
• 8555-30-HD Synergy Front 3" Coil Springs
• 8566-01 Synergy 1" Lift Rear Shackles
• 8550-11 Synergy Adjustable Front Track Bar
• 8581 Synergy Long Arm Brackets
• 8583-04 Synergy Adjustable Front Lower Long Arms
• 8585 Synergy Adjustable Front Upper Long Arms
• 8516-02-400 Synergy Rear Add-A-Leaf Pack
• 8565-02 Synergy Cam Bolt Eliminator Kit