2003-2007 Cummins Long Arm 6" Lift Kit (BDS647H)

Take your Cummins to the next level of stance and control of a 4-Link Long-arm suspension while sending it off to the moon with a full 6" of increased ride height! This suspension system features 6" progressive Pro-Ride Coil Springs and solid steel upper long arms and thick tubular lower long control arms. The long control arm reduces caster change through wheel travel creating a more controlled feeling in the steering wheel both on and off-road.

Base Kit


2003-2007 Cummins Long Arm 6" Lift Kit (BDS647H)-Lift Kit-BDS-Dirty Diesel Customs

Base Kit


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Driveline Adjustment

In some cases, it is necessary to adjust the driveline to eliminate front driveshaft vibration. BDS offers an indexing ring kit or a transfer case drop kit. Make a selection below.

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2003-2012 Cummins 2500 Transfer-Case Components Indexing Ring (BDS122801)-Indexing Ring-BDS-BDS122801-Dirty Diesel Customs

Transfer Case Indexing Ring - (Automatic)

  • Indexing rings eliminate front driveline vibrations
  • Proper clearance prevents cross-member interference
  • Heavy duty steel construction for maximum strength
  • Designed with optimal spline engagement to prevent transmission to transfer case damage


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1994-2013 Cummins Transfer Case Components Indexing Ring (BDS122802)-Indexing Ring-BDS-BDS122802-Dirty Diesel Customs

Transfer Case Indexing Ring - (Manual)

  • Indexing rings eliminate front driveline vibrations
  • Proper clearance prevents cross-member interference
  • Heavy duty steel construction for maximum strength
  • Designed with optimal spline engagement to prevent transmission to transfer case damage

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2003-2012 Cummins Transfer Case Drop Kit (BDS122606)-Transfer Case Drop-BDS-BDS122606-Dirty Diesel Customs

Transfer Case Drop Kit - (Automatic)

Choose this option if your driveshaft has less than 3" of clearance to the crossmember and your truck has the factory transmission mount p/n 52121938AA. See installation instructions for measurement details.
    • Heavy-duty steel spacer or bracket construction
    • Corrects driveline angles after lifting a vehicle
    • E-coated for durability and to resist corrosion

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