BDS Suspension is now shipping complete 8" 4-link conversion systems for the 2019+ RAM 2500 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 and rear 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 2500 4WD
*diesel only

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

BDS1727H/FS - 8” 4-Link Lift Kit
for 2019+ RAM 2500 4WD Diesel Trucks


  • F/R high strength progressive rate coil springs for a great ride on any terrain
  • F/R track bar relocation bracket to re-position axles under the truck
  • Forged drop pitman arm to correct steering angles
  • F/R 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
  • Rear springs outboarded by 16" to improve stability for towing and handling
  • 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
BDS122609 - HD Rear Track Bar
BDS122406 - Carrier Bearing Drop Kit

Coldwater, MI: BDS Suspension expands its listings for the late model 2019+ RAM 2500 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 a 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, careful consideration was taken to design the system for load carrying capacity, handling, and ride quality. The factory coil positioning inside the frame rails is sufficient at smaller heights, but at 8" of lift needed to be modified to increase stability. Similar to the 14-18 models, the rear springs have been outboarded by 8" per side (16" total) using a set of bolt-on mounts. This new position mimics that of a leaf spring on the 3500 models and provides increased stability without compromising ride quality. The new upper and lower coil seats locate off of existing features on the frame and axle, requiring only minor drilling for mounting hardware. The new position allows for a much shorter and more stable coil spring design. This virtually eliminates any chance of coil bowing and ensures the coils react predictably throughout the full range of travel. In addition to the coil springs/mounts, a new track bar relocation system is included to properly set the rear roll-center height and center the axle under the vehicle. The rear track bar relocation includes a new heavy duty adjustable track bar. The track bar uses high-durometer polyurethane bushings at the frame and an adjustable forged COM bearing joint at the axle. Extended rear sway bar links round out the rear suspension components. Rounding out the rear of this kit is your choice of NX2 series or Fox 2.0 Performance Series 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.


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

4 Comments on “8″ 4-Link Systems | 2019+ RAM 2500 Trucks | NPR #438
  • Austin Powell says:

    Why won’t this work with the mega cab?

    • Carter @ BDS Suspension says:

      Hey Austin, we don’t list these kits as compatible with the Mega Cab models due to a clearance issues between the transfer case shifter motor (once indexed) to the OE crossmember. We have heard of some customers “making it work” by modifying or moving the crossmember, but officially we chose to not list it as direct compatibility.

  • Chris says:

    Will the 5.5 4-link for a gas ram 2500 fit on a 2022

    • Carter @ BDS Suspension says:

      Hey Chris,
      Yes, this will fit your 2022. We have approved fitment of kits on all 19-22 RAM 2500 models


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