BDS 4-Inch Radius Arm Lift Kit — Ram 3500 with Factory Rear Air Ride SKU: BDS1723FS | Ram 3500 2019–2024 | 4WD | Gas | 4" Front / 3" Rear | FOX 2.0 Performance Series | Factory Rear Air Ride Required

A complete 4-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. Progressive rate Pro-Ride coil springs provide the 4-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 3-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 Laramie, Limited, Big Horn, Tradesman, and Limited Longhorn trims are verified in BDS fitment data. Exhaust modification is required to clear the front driveshaft — the vehicle can be driven without the front driveshaft to an exhaust shop. Cut-off wheel and welding equipment are required specialty tools — confirm installer capability before scheduling.

Required separately (conditional):

• BDS122422 — Manual transfer case shifter extension, if equipped with manual T-case
• BDS122406 — Carrier bearing drop, if equipped with 2-piece rear driveshaft (carrier bearing)

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:

• 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 3-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):

• BDS122422 — Manual transfer case shifter extension (required for manual T-case)
• BDS122406 — Carrier bearing drop (required for 2-piece rear driveshaft)

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 4WD only. Diesel Ram 3500 is not supported.
• 2024 trim restriction: Only Laramie, Limited, Big Horn, Tradesman, and Limited Longhorn are verified for the 2024 Ram 3500.
• Exhaust modification required: Exhaust modification is required to clear the front driveshaft. The vehicle can be driven without the front driveshaft to an exhaust shop for the modification.
• Manual T-case: Requires BDS122422 (manual transfer case shifter extension), sold separately.
• 2-piece rear driveshaft: Requires BDS122406 (carrier bearing drop), sold separately.
• Difficulty rated Difficult: Cut-off wheel and welding equipment are required. Confirm installer capability before scheduling.
• ADAS recalibration: Required after installation. All recalibration costs are the owner's responsibility.

Installation Notes

Professional installation is strongly recommended. This kit is rated Difficult with an estimated installation time of 7–9 hours. Specialty tools required: cut-off wheel or equivalent and welding equipment.

Exhaust modification: Required before front driveshaft reinstallation. The Ram 3500 can be driven without the front driveshaft to an exhaust shop.

Verify before beginning:

• Factory rear air ride suspension confirmed present
• Confirm gas engine
• Transfer case type — manual T-case requires BDS122422
• Rear driveshaft type — 2-piece requires BDS122406
• Exhaust modification plan in place
• 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 BDS1723FS for complete procedures, torque specifications, and component-specific instructions.

The Obsidian Take

The BDS1723FS is the lower-lift gas air ride option for the 2019–2024 Ram 3500 — 4 inches of front lift and 3 inches of rear block with air bag spacer, compared to BDS1726FS at 5.5 inches front / 5 inches rear. Same factory air ride requirement, same HD tubular radius arm approach, same FOX 2.0 shocks. The difficulty steps up to Difficult on this kit with welding equipment and a cut-off wheel required — a departure from BDS1726FS's pitman arm puller only. Exhaust modification is a definite pre-installation requirement here, not conditional. If you need less lift than BDS1726FS offers and are prepared for the Difficult installation, this is the kit.

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 Laramie, Limited, Big Horn, Tradesman, or Limited Longhorn.
• You want 4 inches of front lift and 3 inches of rear lift that maintains factory air ride function.
• You want FOX 2.0 Performance Series shocks with application-specific valving.
• You are prepared to complete the required exhaust modification.
• Your installer has welding equipment and a cut-off wheel.

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.
• Your Ram 3500 is 2WD.
• Your 2024 trim is not in the verified list.
• You are not prepared to complete the required exhaust modification.
• Your installer does not have welding equipment or a cut-off wheel.
• You want more lift — see BDS1726FS for 5.5-inch front / 5-inch rear on the same platform.
• 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. For the diesel air ride variant, see BDS1724FS.

What is the difference between BDS1723FS and BDS1726FS?
Lift height and difficulty. BDS1723FS delivers 4 inches of front lift and 3 inches of rear lift at Difficult — requiring welding equipment and a cut-off wheel, plus a mandatory exhaust modification. BDS1726FS delivers 5.5 inches of front lift and 5 inches of rear lift at Moderate — requiring only a pitman arm puller with a conditional exhaust note.

Is exhaust modification required?
Yes. Exhaust modification is required to clear the front driveshaft. The vehicle can be driven without the front driveshaft to an exhaust shop.

My truck has a manual T-case — what do I need?
BDS122422 (manual transfer case shifter extension) is required. It is sold separately.

Do I need a carrier bearing drop?
Only if your Ram 3500 has a 2-piece rear driveshaft. If so, BDS122406 is required.

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.

Exhaust Modification Warning: Exhaust modification is required to clear the front driveshaft. This must be completed as part of the installation process. The vehicle can be driven without the front driveshaft to an exhaust shop.

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. This kit is rated Difficult. Welding equipment and a cut-off wheel are required specialty tools. A professional wheel alignment is required after installation.

Tire Fitment Notice: BDS references configurations up to 37 x 12.50-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.