2019-2021 Cummins 3500 4WD 4" 4-Link Lift Kit (BDS1666H)
BDS Suspension expands its listings for the late model 2019+ Cummins 3500 4WD diesel trucks with new 4" 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 off-road capability with room for larger tires while improving overall vehicle handling.
Tire & Wheel Combinations:
- 37x12.50 w/ 20x9 and 5.625"
- 35x12.50 w/ 20x9 and 4.5"
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
- Does not work with manual shift transfer cases
Installation:
- Click Here For Installation Instructions
- Difficulty: 4 (where 1 = easiest and 5 = complicated)
Part Number: BDS1666H

4" Front Coil Springs
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4-Link Box Kit
This Box Kit includes the following products:
- Driver & Passenger Side 4-Link Brackets
- Bump Stop
- Front Track Bar Bracket
- Pitman Arm
- Weld in Bung
- Machined 4-link Sleeve
- Driver & Passenger Side Brakeline Bracket
- Sway Bar Drop Bracket
- 3-1/4” Sleeve
- Cam Plates
- BDS Badges
- CV Boots Large & Small
- 1/2-13 Rivet Nut
- 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
- Bushing (Large - Lower Control Arm)
- 1.00 x .120 x 3.25 Sleeve
- Straight Grease Zerk
- Bushing (Small - Upper Control Arm)
- .875 x .156 x 2.62 Sleeve
- 90 Degree Grease Zerk
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6-Bolt Transfer Case Indexing Kit
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3" Rear Box Kit w/ Overload
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2" Rear Box Kit w/o Overload
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2" Rear Box Kit w/ Overload
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