BDS 4-Inch 4-Link Lift Kit | FOX 2.0 Shocks | Ram 3500 4WD Gas 2019–2026 | With Factory Rear Overload Leaf | SKU: 1677FS

The BDS 1677FS is a 4-inch 4-link front lift kit with FOX 2.0 Performance Series shocks for the 2019–2026 Ram 3500 4WD gas — specifically for trucks equipped with the factory rear overload leaf spring. This is the overload leaf variant of the BDS 4-link system. The kit corrects factory radius arm geometry, eliminates radius arm bind, delivers 4 inches of front lift with gas-tuned coil springs, and pairs FOX 2.0 damping to handle the load and towing demands of the 3500 platform with the overload leaf rear suspension intact.

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

First — rear suspension: if your Ram 3500 does NOT have the factory rear overload leaf spring, this is the wrong kit. Order 1676FS. If your Ram 3500 has factory rear air ride, order 1723FS. This listing is for trucks with the factory overload leaf only.

Second — engine: this kit is gas-tuned. Ram 3500 diesel requires a different kit.

Third — drivetrain: 4WD only. Ram 3500 2WD is not compatible.

Confirm all three before ordering. Text (469) 407-7538 if you are unsure whether your Ram 3500 has the factory rear overload leaf.

Component Specifications

What Is and Is NOT Included

Critical Compatibility

Three fitment confirmations required before ordering. All three must be true for this kit to apply to your truck.

Not sure if your Ram 3500 has the factory rear overload leaf? Text (469) 407-7538 before ordering.

Ram 3500 4-Link Kit Variant Reference

Tire Clearance

At 4 inches of front lift on the Ram 3500 gas platform, typical fitment runs 35–37-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specifications with your wheel and tire supplier before ordering — clearance varies based on offset, backspacing, and any additional trimming.

Installation Notes

Professional installation is required. The 4-link conversion is not a bolt-on leveling kit. Installation requires a qualified suspension shop with experience on heavy-duty truck platforms and 4-link conversion systems. Do not attempt DIY installation.

Full front-end alignment is mandatory after installation. Do not drive on public roads before alignment is completed. Running a lifted truck without post-installation alignment causes accelerated tire wear, steering drift, and handling instability.

Torque all fasteners to BDS specification. Torque specs are included in the BDS installation instructions. Do not estimate torque values — under-torqued suspension components on a 3500-class truck are a safety failure risk.

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.

Confirm rear suspension configuration before ordering. Overload leaf, non-overload, and air ride variants are separate kits — this kit is non-returnable once installed. Text (469) 407-7538 if you need help identifying your rear suspension configuration before the order ships.

Text (469) 407-7538 to confirm your Ram 3500 rear suspension configuration, engine, and drivetrain before ordering.

The Obsidian Take

The BDS 1677FS is the correct kit for the 2019–2026 Ram 3500 4WD gas owner with the factory rear overload leaf who wants a proper 4-link conversion with FOX 2.0 damping. The overload leaf variant is tuned for the additional spring rate that the overload pack brings to the rear suspension — running the non-overload kit (1676FS) on an overload-equipped truck compromises ride quality, geometry balance, and load handling under tow.

If your Ram 3500 does not have the factory rear overload leaf, order 1676FS — that kit is tuned for standard rear suspension and the two are not interchangeable.

If your Ram 3500 is diesel, this kit does not apply — the weight differential between the gas and diesel 3500 platform requires a different tune. If you have factory rear air ride, order 1723FS.

Three splits, one correct kit. Gas, 4WD, with overload leaf — the 1677FS is the complete front-end solution for your truck, tuned for the exact rear suspension configuration it will live with.

Common Questions

How do I know if my Ram 3500 has the factory rear overload leaf spring?
The overload leaf is an additional leaf pack that sits above the main leaf spring pack on the rear axle — it contacts the axle only under heavy load and is visible as an extra leaf when inspecting the rear suspension from underneath. If you are unsure, text (469) 407-7538) with your build sheet and we will confirm before your order ships.

What is the difference between 1677FS and 1676FS?
1677FS (this listing) is tuned for Ram 3500 trucks with the factory rear overload leaf spring. 1676FS is tuned for Ram 3500 trucks without the overload leaf on standard rear suspension. The kits are not interchangeable — confirm your rear suspension configuration before ordering.

Does this kit lift the rear of the truck?
This kit addresses front lift via the 4-link conversion. Rear lift components are not included. Confirm rear lift requirements with your installer before ordering if needed.

Is this a DIY install?
No. The 4-link conversion requires a qualified suspension shop. This is not a bolt-on leveling kit — professional installation is required.

What tire size will fit after installation?
At 4 inches of front lift on the Ram 3500 gas platform, typical fitment runs 35–37-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specs with your wheel and tire supplier before ordering.

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.

Does the kit include an alignment?
No. A full front-end alignment is required after installation and is the buyer's responsibility. Do not drive on public roads before alignment is completed.

Verified Fitment