2013-2018 Cummins 6" BDS Lift Kit (BDS1647H)
Air-equipped Cummins trucks have sometimes had hard times getting lift kits and accessories, but BDS Suspension is now shipping suspension lifts and accessories for the rear air ride equipped RAM 3500 trucks. These standard kits are designed to retain the factory radius arms by relocating the frame mounting location using a pair of 1/4" steel drop brackets to maintain suspension geometry.
Tire & Wheel Combinations:
- 37x13.50 w/ 17x9/18x9/20x9 and 5.625"
- 37x12.50 w/ 17x9/18x9/20x9 and 4.5"
Notes:
- Kits come standard with a 6-Bolt indexing ring kit. If equipped with heavy-duty 8-bolt t-case order 122813 in place of 122623
- The carrier bearing drop (122405) is necessary for models equipped with a two-piece rear driveshaft. Some vehicles may require rear driveshaft spacer kit 122007 to maintain adequate rear driveshaft engagement
- Will NOT fit cab and chassis models The shocks used in these kits are different than a standard 3500, do not use a different shock length, or damage to the airbag will result.
- Can be used on SRW or DRW models, DRW models fit inner wheel clearance to the upper U-bolt plate on 5.5-6" kits
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS1647H

6" Front Coil Springs
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6" Front Box Kit
This Box Kit includes the following products:
- Pitman Arm
- Trackbar bracket
- Fish Wire
- 1/2" Bolt Tab
- 1/4” Spacer Sleeve
- 4-6" brakeline relocation bracket
- 5/16"-18 x 1" Type 23 self threading bolts
- Weld in bung
- Long machined spacer sleeve
- Driver & Passenger Side Radius Arm Drop Bracket
- 2 Sway Bar Drop Brackets
- 1/2" Rivet nuts
- Spacer Sleeve
- Cable tie
- Thread Locker
- Brake Extension
- Bump Stops
- Bolt Pack - Brake Line
- Bolt Pack - Rivet nut installation
- Bolt Pack - Track bar Bracket
- Bolt Pack - Rad Arm Drop Brackets
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Auto Level Air Suspension 6" Rear Lift Components
This Box Kit includes the following products:
- 2 6” Rear Blocks
- 2 6" Air Bag Spacers
- 4 5/8” x 4” x 16” Round U-Bolts
- 8 5/8” Fine High Nuts
- 8 5/8” SAE Flat Washers
- 2 Brake Line Brackets
- 3 Air Tank Spacers
- Bolt Pack - Rear Brake Line Bracket
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Ram trucks have an optional Aisin heavy-duty 6-speed transmission available in the 3500 trucks that utilize a different transfer case mounting bolt pattern (8-bolt). The 8-bolt kit also includes an internal shaft seal extension and a new shaft seal.
6-Bolt Transfer-Case Indexing Ring
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8-Bolt Transfer-Case Indexing Ring
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NX2 Series Shocks (2x)
The BDS NX2 series gas shocks offer impressive performance on and off-road. Standard in most BDS lift kits, these nitrogen-charged, twin-tube shocks offer 10-stage velocity-sensitive valving for lightning-fast damper performance and control.
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