2009-2013 Cummins 6" Long Arm BDS Lift Kit (BDS629H)
Take your 4th Gen 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 an 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.
Tire & Wheel Combinations:
- 37" x 12.50" w/ 17 x 9 and 5"
Notes:
- Measure rear axle tube before ordering. Some 4" axle models with dual overloads will require 406
- Rear lift options will not fit dually applications.
- If driveline vibration occurs, order either transfer case drop or indexing kit available in optional accessories. NOTE: 122606 transfer case drop kit will only replace the OE bracket #52121938AA
- 102009 Rear brake lines will not fit 2012-13 models.
- Exhaust modification will be required for dual rear shock kit 12200
- Will not fit Cab and Chassis models
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS629H

6" Front Coil Springs
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6" Long Arm Box Kit
This Box Kit includes the following products:
- Pitman Arm
- 2 Bolt Packs
- Track Bar Bracket
- Sway Bar Link
- 2 Bump Stop Brackets
- 2 Urethane Bump Stops
- Driver & Passenger Side Brakeline Adaptor
- 2 Steering Stops - Weld On
- 2 Sway Bar Link U-Brackets
- 2 5/8” ID Hourglass Bushings
- 2 3/4” ID Wide Hourglass Bushings
- 2 .625 x .109 x 1.375 Sleeves
- 2 .750 x .090 x 1.575 Sleeves
- Bolt Pack - Sway Bar Hardware
- Bolt Pack - Misc. Hardware
- Bolt Pack - Bumper Spacer
- Rear Brakeline Bracket
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Control Arm Box Kit
This Box Kit includes the following products:
- Driver & Passenger Side Upper Control Arms
- 2 Lower Control Arms
- 8 UCA Bushings - 3/4” ID
- 4 LCA Bushings - Axle
- 4 LCA Bushings - Frame
- 4 UCA Sleeves .750 x .095 x 2.33
- 2 LCA Sleeves 1.00 x .1875 x 2.60
- 2 LCA Sleeves 1.00 x 5/32 x 2.60 2010+ only (18mm ID)
- 2 LCA Sleeves 1.00 x .120 x 3.25
- 8 90 Degree Grease Zerks
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Control Arm Mounts
This Box Kit includes the following products:
- Driver & Passenger Side Long Arm Bracket
- Bolt Pack
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4" Rear Block Kit - (4" Axle Tube)
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4" Rear Block Kit - (3.5" Axle Tube)
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5" Lift Leaf Spring - (3.5" & 4" Axle Tube) (2x)
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Important: Measure your rear axle & select the appropriate kit.

U-Bolt - (3.5"X12.5") (4x)
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