BDS 5.5-Inch Radius Arm Lift Kit | Rear Air Ride | FOX 2.0 Shocks | Ram 3500 4WD Gas 2019–2026 | SKU: 1726FS

The BDS 1726FS is a 5.5-inch radius arm front lift kit with FOX 2.0 Performance Series shocks for the 2019–2026 Ram 3500 4WD gas equipped with factory rear air ride suspension. Heavy-duty BDS radius arms replace the factory arms, correcting caster at lift height and reducing bushing bind. Gas-tuned front coil springs deliver 5.5 inches of front lift at the correct spring rate for the gas engine weight. The included air ride-specific rear brackets preserve the factory load-leveling function at lifted height.

This kit has four hard fitment splits before it applies to your truck.

First — rear suspension: factory rear air ride only. If your Ram 3500 does NOT have factory rear air ride, order 1686FPE (no overload leaf, FOX 2.5 PE) or 1687FPE (with overload leaf, FOX 2.5 PE). Installing this kit on a non-air-ride truck adds brackets with nothing to connect to.

Second — engine: gas-tuned coil springs. Ram 3500 diesel with air ride requires a different kit — order 1724FS.

Third — lift height: this kit delivers 5.5 inches of front lift. If you want 4 inches of front lift with air ride integration on the gas platform, order 1723FS.

Fourth — drivetrain: 4WD only. Ram 3500 2WD is not compatible. Ram 3500 2018 and earlier is a different platform.

Text (469) 407-7538 to confirm all four before the order ships.

Component Specifications

What Is and Is NOT Included

Critical Compatibility

Four fitment confirmations required before ordering.

Not sure about rear suspension type, lift height, or engine? Text (469) 407-7538 before ordering.

2019–2026 Ram 3500 Gas Air Ride Lift Kit Variant Reference

How to Confirm Factory Rear Air Ride on Your Ram 3500

Check your window sticker or build sheet for "Rear Air Suspension" or "Active-Level Four-Corner Air Suspension." Visually, the factory air ride system uses air bags at the rear axle with an onboard compressor — distinguishable from conventional leaf springs on inspection. Text (469) 407-7538 with your VIN if you need confirmation before ordering.

Tire Clearance

At 5.5 inches of front lift on the 2019–2026 Ram 3500 gas platform, typical fitment runs 35–38-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering.

Installation Notes

Professional installation is required — Ram air ride experience mandatory. A radius arm lift with factory air ride integration requires a qualified suspension shop experienced with Ram air ride systems. Do not attempt DIY installation.

Full front-end alignment is mandatory after installation. Do not drive on public roads before alignment is completed.

Factory air ride system verification is mandatory after installation. Verify that the factory air ride load-leveling function operates correctly at lifted height. If the air ride system does not function correctly, do not drive — return to your installer to verify bracket installation per BDS instructions before road use.

Torque all fasteners to BDS specification. Torque specs are included in the BDS installation instructions. Do not estimate torque values.

FOX shock break-in period. Allow FOX 2.0 shocks to complete the manufacturer-recommended break-in period before aggressive off-road or heavy towing use.

Text (469) 407-7538 to confirm air ride configuration, lift height, engine, and drivetrain before ordering.

The Obsidian Take

The BDS 1726FS is the correct kit for the 2019–2026 Ram 3500 4WD gas owner who has factory rear air ride and wants 5.5 inches of front lift without giving up the load-leveling capability the air ride system provides. Gas-tuned springs, heavy-duty BDS radius arms, air ride-specific brackets, and FOX 2.0 damping — the complete front-end geometry package for the gas 3500 with air ride, at the correct lift height and correct spring tune for the gas platform.

If you want 4 inches of front lift instead of 5.5 on the gas air ride platform, order 1723FS. If you want to step up to FOX 2.5 PE shocks and your Ram 3500 does not have factory air ride, order 1686FPE (no overload leaf) or 1687FPE (with overload leaf) — both deliver FOX 2.5 PE damping without air ride integration hardware. If your Ram 3500 is diesel with air ride, order 1724FS — gas-tuned springs are not correct for the diesel engine weight.

The air ride brackets in this kit are what make the difference between a lifted Ram 3500 that still levels under tow and one that doesn't. If your truck has the air ride system, this is the kit that keeps it working.

Common Questions

How do I confirm my Ram 3500 has factory rear air ride?
Check your window sticker or build sheet for "Rear Air Suspension" or "Active-Level Four-Corner Air Suspension." Text (469) 407-7538 with your VIN and we will confirm before your order ships.

What is the difference between 1726FS and 1723FS?
Both kits fit the 2019–2026 Ram 3500 4WD gas with factory rear air ride. The only difference is lift height — 1726FS delivers 5.5 inches and 1723FS delivers 4 inches. Choose based on your target ride height and tire clearance requirements.

What is the difference between 1726FS and 1686FPE or 1687FPE?
1726FS is for Ram 3500 trucks with factory rear air ride — includes air ride brackets and FOX 2.0 shocks. 1686FPE and 1687FPE are for Ram 3500 trucks without factory rear air ride — FOX 2.5 PE shocks, no air ride integration hardware. Confirm your rear suspension configuration before ordering.

Why can't I use diesel springs on my gas Ram 3500?
The gas and diesel Ram 3500 have different front engine weights. Diesel-tuned springs installed under a gas engine deliver excessive spring rate and harsh ride. Gas-tuned springs installed under a diesel engine sag and compromise front-end geometry under load. Order 1724FS for the diesel air ride platform.

What happens if my air ride doesn't work correctly after installation?
Do not drive the truck. Return to your installer to verify the air ride brackets are installed correctly per BDS instructions before road use.

Is this a DIY install?
No. Ram air ride system experience is required. This is not a bolt-on leveling kit — professional installation is required.

What warranty does this kit carry?
BDS suspension components carry the BDS No-Fine-Print Warranty. FOX 2.0 shocks carry a FOX 1-year limited warranty.

Verified Fitment