2019-2021 Cummins 3500 4WD 6" 4-Link Lift Kit (BDS1690H)
BDS Suspension expands its listings for the late model 2019+ Cummins 3500 4WD diesel trucks with new 6" 4-link conversion systems. Designed to improve the looks and performance of your new RAM, these new kits join existing radius arm variants to offer improved strength and handling on/off-road. This kit includes everything necessary to correctly lift them for improved offroad capability with room for larger tires while improving overall vehicle handling.
Tire & Wheel Combinations:
- 37x12.50 w/ 20x9 and 4.5-5.625"
- 37x12.50 w/ 20x9 and 5.625"
Notes:
- T-case indexing ring available for 6-bolt and 8-bolt equipped models, check the vehicle before ordering
- Will not fit Cab and Chassis models
- Will NOT fit rear air-ride equipped models
- Diesel models only
- Will NOT Fit Mega Cab Aisin Transmissions (8-bolt)
- Does not fit Dually Models with 8-bolt Transmissions (Aisin)
- Does not work with manual shift transfer cases
- Although this is pictured with Fox Shocks, this kit will come equipped with BDS Shocks. If you would like fox shocks, please reach out.
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS1690H

6" Front Coil Springs
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4-Link Box Kit
This Box Kit includes the following products:
- Driver & Passenger Side 4-Link Bracket
- Bump Stop
- Front Track Bar Bracket
- Pitman Arm
- Weld in Bung
- Machined 4-link Sleeve
- Driver & Passenger Brakeline Bracket
- Sway Bar Drop Bracket
- 3-1/4” Sleeve
- Cam Plates
- BDS Badges
- CV Boot Large & Small
- 1/2-13 Rivet Nuts
- Bolt Pack (Badge)
- 1/8” SS Rivets
- Bolt Pack (Cam Plates)
- 18mm-2.50 x 140mm Bolt, Clear Zinc
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4-Link Box Kit
This Box Kit includes the following products:
- Upper & Lower Control Arms
- 4 Bushings (Large - Lower Control Arm)
- 1.00 x .120 x 3.25 Sleeve
- Straight Grease Zerk
- 4 Bushings (Small - Upper Control Arm)
- 875 x .156 x 2.62 Sleeve
- 90 Degree Grease Zerk
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5" Rear Box Kit w/o Overload
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5" Rear Box Kit w/ Overload
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8-Bolt Transfer Case Indexing Kit
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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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