BDS 5.5-Inch Radius Arm Lift Kit — Ram 3500 with Factory Rear Air Ride SKU: BDS1726FS | Ram 3500 2019–2024 | 4WD | Gas | 5.5" Front / 5" Rear | FOX 2.0 Performance Series | Factory Rear Air Ride Required

A complete 5.5-inch radius arm suspension lift kit engineered for the 2019–2024 Ram 3500 gas 4WD — specifically for trucks equipped with the factory OE rear air ride suspension system. Heavy-duty tubular replacement radius arms mount in the factory location with caster adjustment and OE-style rubber bushings. Gas-specific progressive rate Pro-Ride coil springs provide the 5.5-inch front lift. A precision transfer case indexing ring and high-clearance transmission crossmember address driveline geometry at this lift height. The rear uses a high-strength steel lift block with a heavy-duty air bag spacer for the factory air ride system and extended U-bolts for a 5-inch rear lift. FOX 2.0 Performance Series shocks front and rear. Supports up to 37-inch tires.

Before ordering: This kit is engineered for Ram 3500 trucks equipped with the factory OE rear air ride suspension system only — it will not fit standard non-air-ride models. Gas 4WD only. For 2024: only Limited Longhorn, Tradesman, Limited, Big Horn, and Laramie trims are verified in BDS fitment data. Dually or Mega Cab models with an Aisin transmission (8-bolt) require DEF tank relocation bracket PN 122409, sold separately.

Required separately (conditional):

• PN 122409 — DEF tank relocation bracket, required for Dually or Mega Cab with Aisin transmission (8-bolt)

Verified Fitment

Component Specifications

Lift Configuration (this SKU):

HD Radius Arms:

Pro-Ride Coil Springs — Front:

Rear Lift — Block with Air Bag Spacer:

FOX 2.0 Performance Series Shocks (front and rear):

Recommended Tire and Wheel Configurations (trimming may be required):

What Is and Is NOT Included

Included — Front:

• Gas-specific progressive rate Pro-Ride coil springs (pair)
• HD tubular radius arms (pair)
• Forged drop pitman arm
• Track bar relocation bracket
• Sway bar relocation hardware
• Brake line brackets
• Transfer case indexing ring
• High-clearance transmission crossmember
• FOX 2.0 Performance Series front shocks

Included — Rear:

• High-strength steel 5-inch lift block
• Heavy-duty air bag spacer (for OE air ride system)
• Extended U-bolts
• FOX 2.0 Performance Series rear shocks

Not included (conditional — may be required):

• PN 122409 — DEF tank relocation bracket (required for Dually or Mega Cab with Aisin 8-bolt transmission)

This kit will not fit:

• Ram 3500 without factory rear air ride suspension
• Diesel engine models
• 2WD models

Critical Compatibility

• Factory rear air ride required: This kit is engineered specifically for Ram 3500 trucks with the factory OE rear air ride suspension system. It will not fit standard non-air-ride models.
• Gas engine only: Gas-specific Pro-Ride coil springs are included. Diesel Ram 3500 is not supported — see BDS1724FS for the diesel air ride variant.
• 2024 trim restriction: Only Limited Longhorn, Tradesman, Limited, Big Horn, and Laramie are verified for the 2024 Ram 3500.
• Dually or Mega Cab with Aisin transmission: These configurations require DEF tank relocation bracket PN 122409, sold separately.
• ADAS recalibration: Required after installation. All recalibration costs are the owner's responsibility.

Installation Notes

Professional installation is strongly recommended. This kit is rated Moderate with an estimated installation time of 6–8 hours. A pitman arm puller is the only specialty tool required.

Verify before beginning:

• Factory rear air ride suspension confirmed present
• Confirm gas engine
• Dually or Mega Cab with Aisin 8-bolt transmission — PN 122409 required
• 2024 trim confirmed in verified fitment list
• ADAS recalibration appointment scheduled

Professional alignment is required after installation. Refer to the current BDS Suspension installation instructions for SKU BDS1726FS for complete procedures, torque specifications, and component-specific instructions.

The Obsidian Take

The BDS1726FS is the gas engine companion to BDS1724FS (diesel) — same 2019–2024 Ram 3500 factory rear air ride platform, same 5-inch rear block with heavy-duty air bag spacer, same FOX 2.0 shocks, same Moderate difficulty and pitman arm puller only requirement. The front lift steps down slightly to 5.5 inches versus the diesel kit's 6 inches, using gas-specific Pro-Ride coil springs. If your Ram 3500 has an Aisin transmission and is a Dually or Mega Cab, source PN 122409 before the kit arrives. That's the one pre-order action item beyond confirming factory air ride is present.

This Product Is For You If

• You own a 2019–2024 Ram 3500 gas 4WD equipped with the factory rear air ride suspension system.
• Your 2024 trim is Limited Longhorn, Tradesman, Limited, Big Horn, or Laramie.
• You want 5.5 inches of front lift and 5 inches of rear lift that maintains factory air ride function.
• You want FOX 2.0 Performance Series shocks with application-specific valving.
• You want up to 37-inch tire clearance.
• Dually or Mega Cab with Aisin 8-bolt: you have sourced PN 122409.

This Product Is Not For You If

• Your Ram 3500 does not have factory rear air ride suspension.
• Your Ram 3500 has a diesel engine — see BDS1724FS.
• Your Ram 3500 is 2WD.
• Your 2024 trim is not in the verified list.
• You want NX2 Nitro Series shocks — see the NX2 variant.
• You want FOX 2.5 Performance Elite Series shocks — see the FOX 2.5 variant.

Product Family Reference

Common Questions

Does this kit work on Ram 3500 trucks without factory rear air ride?
No. This kit is engineered specifically for the factory OE rear air ride suspension system.

Does this kit fit the diesel Ram 3500?
No. Gas-specific Pro-Ride coil springs are included. For the diesel air ride variant, see BDS1724FS.

What is the difference between BDS1726FS and BDS1724FS?
Engine and front lift height. BDS1726FS is gas with 5.5 inches of front lift. BDS1724FS is diesel with 6 inches of front lift. Both deliver 5 inches of rear lift via block with air bag spacer and are built for the factory rear air ride Ram 3500.

My truck is a Dually or Mega Cab with an Aisin transmission — what do I need?
DEF tank relocation bracket PN 122409 is required. It is sold separately and not included in this kit.

What specialty tools do I need?
A pitman arm puller is the only specialty tool listed for this installation.

Does ADAS need to be recalibrated after installation?
Yes. All ADAS sensors require professional recalibration after installation. All recalibration costs are the owner's responsibility.

Manufacturer Data Disclaimer

Fitment, specification, included-component, and installation data for this kit are sourced from BDS Suspension manufacturer documentation and OFAS-verified product data current as of publication. Specifications are subject to change without notice; confirm current documentation for this SKU at the time of purchase.

Required Legal, Warning, Fitment, and Return Notices

Fitment Notice: This kit requires the factory OE rear air ride suspension system. It will not fit Ram 3500 models without factory rear air ride. Gas 4WD only. For 2024, only verified trims are supported.

ADAS Recalibration Warning: This kit alters vehicle ride height and suspension geometry. All advanced driver assistance system (ADAS) sensors require professional recalibration after installation. Schedule recalibration at an authorized dealer or certified ADAS service center. All recalibration costs are the owner's responsibility.

Installation Warning: Professional installation is strongly recommended. A professional wheel alignment is required after installation.

Tire Fitment Notice: BDS references configurations up to 37 x 13.50-inch tires. Trimming may be required. Buyer is responsible for verifying tire and wheel clearance for their specific vehicle and build.

California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Return Policy: All returns require prior authorization from Obsidian Forged Auto Supply — do not ship any product back without a Return Merchandise Authorization (RMA). To request an RMA, contact OFAS at Support@obsidianforgedautosupply.com or 469-407-7538 (Monday–Friday 9am–5pm CST, Saturday 9am–3pm CST) with your order number, product SKU, return reason, and photos. Return requests must be submitted within 90 days of delivery. To qualify, the product must be new, unused, uninstalled, complete with all hardware and included components, and in original manufacturer packaging. Do not write on, tape to, or place shipping labels directly on the manufacturer's product box. Return shipping is the customer's responsibility in all cases. Non-defective returns may be subject to a 15% restocking fee. No restocking fee applies when OFAS shipped the wrong item or the return is due to a verified defect or approved damage claim. Some products — including special-order, electrical, and installed items — may be non-returnable. Return eligibility is also subject to applicable manufacturer and supplier return requirements. Approved refunds are issued to the original payment method within approximately 10 business days of the warehouse receiving and processing the returned product. For damaged, missing, or incorrect shipments, contact OFAS within 48 hours of delivery, retain all packaging, and do not install the product.