2019-2024 Ram HD 4" 4-Link Conversion Kit with NX2 Nitro Shocks (BDS1721H)

BDS 4" 4-Link conversion lift kit for the 2019-2024 Ram 3500 diesel with factory rear air bags, clearing up to 35" tires. The front converts the factory stamped steel radius arms to a BDS 4-link with HD upper and lower control arms on 1/4" steel brackets to optimize geometry and limit caster change, plus diesel-specific progressive-rate Pro-Ride coil springs, a forged drop pitman arm and track bar bracket for steering correction, sway bar relocation, and brake line brackets. A t-case indexing ring and new transmission crossmember let you keep the factory front driveshaft. The rear runs a high-strength fabricated lift block, heavy duty air bag spacers, and longer u-bolts.

Features

• Heavy duty 4-link improves strength, handling and caster control
• Front high strength progressive rate coil springs
• Front track bar relocation bracket re-positions the axle
• Forged drop pitman arm corrects steering angles
• Front sway bar correction maintains handling performance
• HD transmission crossmember and t-case indexing ring allow use of factory driveshafts
• BDS NX2 nitrogen-charged gas shocks
• Twin-tube design with 10-stage velocity-sensitive valving
• Dual-welded ends for increased strength
• 1-3/8" high-flow piston and self-lubricating seals
• Silver powder coat finish

Specs

• Front Lift Method: Coil Spring
• Rear Lift Method: Block
• Shocks Included: Yes
• Front Lift Height: 4 inch
• Rear Lift Height: 3 inch

Recommended Tire & Wheel Fitment

• Tire Size: 37x12.5
• Wheel Diameter: 20x9
• Back Spacing: 5.625

Notes

• Fits OE air ride systems only.
• Dually with 8-bolt (Aisin) transmission requires BDS122409 DEF relocation kit.
• Mega Cab with 8-bolt (Aisin) transmission requires BDS122409 DEF relocation kit.
• Vehicles with a manual t-case require BDS122423 manual transfer case shifter extension.
• Vehicles with a 2-piece rear driveshaft (carrier bearing) require BDS122406 carrier bearing drop.
• Ram's optional Aisin HD 6-speed transmission in the 3500 uses a different 8-bolt transfer case pattern; the 8-bolt kit also includes an internal shaft seal extension and new shaft seal.

Includes

• BDS012319, 2019-2024 Ram 3500 Auto Level Air Suspension 3 inch Rear w/o overload (UPC 711745611474)
• BDS012433, 2019-2024 Ram 2500 / 2019-2024 Ram 3500 4-Link Box Kit 1of2 (UPC 658848612437)
• BDS012434, 2019-2024 Ram 2500 / 2019-2024 Ram 3500 4-Link Box Kit - 2 of 2 (UPC 658848612444)
• BDS032403, 2019-2024 Ram 2500/3500 Coil 4 inch Diesel - 5.5 inch Gas (UPC 711745612792)
• BDS122421, 2019-2024 Ram 3500 T-Case Index 18deg - 8 Bolt (UPC 658848619542)
• BDS85714, Shock - 26.78 x 15.96 x 2-3/8 - S50/EB2 (UPC 711745609549)
• BDS85758, Shock- 27.90 x 16.55 x 2-3/8 - EB1/EB1 (UPC 711745609679)