BDS Suspension is now shipping complete 8" 4-link conversion systems for the 2019+ RAM 3500 4WD diesel trucks. These kits have been engineered for improved on-road comfort and offroad capability for your late model RAM. Kits include high strength front 4-link conversion brackets, front progressive rate coil springs, your choice of gas shocks, steering and track bar correction, driveline adjustments (does require a new front driveshaft) and more to allow clearance for up to 40” tires. As with all BDS Suspension systems these new 8" 4-link systems are backed by Factory Protection Plus for peace of mind wherever you choose to explore.

Vehicle Fitment

2019-2021 RAM 3500 4WD
*diesel only | w/o rear airbag

Rec'd Wheel/Tire Specs

40x13.50 Tires w/ 17x9/18x9/20x9 Wheels (4.5-5.5" BS)
38x15.50 Tires w/ 20x12 Wheels (5.5" BS)
*trimming may be necessary

Factory Protection Plus
  • 5-year, 100K-mile Drivetrain Warranty
  • BDS’s exclusive No Fine Print Warranty

Product Info

BDS1728H/FS - 8” 4-Link Lift Kit (Rear Block + AAL w/o Overload | 6-Bolt T-Case)
BDS1729H/FS - 8” 4-Link Lift Kit (Rear Block + AAL w/ Overload | 6-Bolt T-Case)
BDS1730H/FS - 8” 4-Link Lift Kit (Rear Block + AAL w/o Overload | 8-Bolt T-Case)
BDS1731H/FS - 8” 4-Link Lift Kit (Rear Block + AAL w/ Overload | 8-Bolt T-Case)


  • High strength progressive rate coil springs for a great ride on any terrain
  • Track bar relocation bracket to re-position axle under the truck
  • Forged drop pitman arm to correct steering angles
  • Sway bar correction to maintain handling performance
  • HD transmission crossmember and t-case indexing ring to improve front driveline angles. OE rear driveline can be reused (aftermarket front driveline is required)
  • BDS NX2 gas or FOX performance series IFP gas shocks to improved ride and offroad performance
    Allows clearance for up to 40” tires

Available Accessories

BDS122324 HD Adjustable Track Bar
BDS85427 Single NX2 Steering Stabilizer
FOX98224018 - Single FOX 2.0 Steering Stabilizer
BDS55382 + BDS85422 (x2) - Dual NX2 Steering Stabilizer Kit
BDS55382 + FOX98224016 (x2) - Dual FOX Steering Stabilizer Kit
BDS122407 + BDS123409 - Recoil Traction Bar Kit

Coldwater, MI: BDS Suspension expands its listings for the late model 2019+ RAM 3500 4WD diesel trucks with new 8" 4-link conversion systems that are on the shelf ready to ship. Designed to improve the look and performance of your new RAM, these new kits join existing 2"/3"/4"/6" lift kit options offering improved strength, capability and handling at a new taller lift height. Kits include everything necessary to correctly lift them for improved offroad capability with room for up to 40" tires while improving overall vehicle handling.

Up front these systems use a pair of 8" diesel specific progressive rate coil springs to provide the extra height and smooth controlled performance in the harshest of terrains. A forged drop pitman arm is supplied to correct steering angles along with an HD bar drop bracket to re-center the front axle. A pair of sway bar drop brackets reposition the OE sway bar for optimal performance along with extended polyurethane bump stops to limit up travel and brake line brackets to allow full droop. To correct the front suspension geometry at the new height, the factory stamped steel radius arms are converted over to 4-link using a pair of 1/4" steel brackets and high strength upper and lower control arms designed to limit caster control throughout suspension travel for more predictable handling characteristics. Also supplied are your choice of BDS NX2 gas shocks or FOX 2.0 Performance Series IFP gas shocks for improved ride and performance.

At 8” of lift it is critical to make front driveline adjustments to maintain use of 4WD due to the increased operating angle. To do this, BDS Suspension provides a heavy duty replacement transmission crossmember as well as a transfer case indexing ring to reposition the front driveline output which will need to be used in combination with an aftermarket front driveshaft (not included with kit). In the rear of the RAM 3500 kits a 5" block and add-a-leaf kit along with longer u-bolt for a level-to-slightly tail high while maintaing tow capacity. Finishing out the rear are a matching set of BDS NX2 gas shocks or FOX 2.0 Performance Series IFP gas shocks.

As with all BDS Suspension kits, these include Factory Protection Plus for a limited lifetime warranty, ESC System compatibility, and 5-year, 100,000-mile drivetrain warranty. Get the look and the ride you are after with these new 8” 4-link systems from BDS Suspension.


© BDS Suspension, 491 W. Garfield Ave. Coldwater, MI 49036
(517) 279-2135 | bds-suspension.com | sales-bds@ridefox.com

2 Comments on “8″ 4-Link Systems | 2019+ RAM 3500 Trucks | NPR #439
  • Diego Hernandez says:

    Could you tell me how come this kit won’t work for a dually? What’s so different from the 6″ one you guys have

    • Carter @ BDS Suspension says:

      Hey Diego, our 2″/3″/4″/6″/8″ kits can be used on dually applications as long as you have the 6-bolt t-case. Our 4-8″ kits require indexing the transfer case to improve front driveline angle, on the dually 8-bolt (Aisin) trucks there is a clearance issue to the DEF tank.


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