BDS 4-Inch 4-Link Lift Kit | NX2 Nitro Shocks | Ram 3500 4WD Gas 2019–2026 | With Factory Rear Overload Leaf | SKU: 1679H
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
Verified Fitment
| Year Range | Make | Model | Drivetrain | Engine | Rear Suspension |
|---|---|---|---|---|---|
| 2019–2026 | Ram | 3500 | 4WD | Gas only | With factory rear overload leaf spring |
Component Specifications
| Specification | Detail |
|---|---|
| SKU | 1679H |
| Brand | BDS Suspension |
| Lift Height | 4 inches (front) |
| Suspension Type | 4-link conversion — gas-tuned |
| Front Coil Springs | Gas-tuned — engineered for Ram 3500 gas platform weight |
| Shock Model | NX2 Nitro — entry-level |
| Track Bar | Track bar correction bracket — included |
| Fuel Type | Gas only |
| Drivetrain | 4WD only |
| Rear Suspension Requirement | With factory rear overload leaf spring |
| Application | Ram 3500 4WD Gas 2019–2026 — with factory rear overload leaf |
| Warranty | BDS No-Fine-Print Warranty |
What Is and Is NOT Included
| Included | Not Included |
|---|---|
| 4-link front suspension conversion components | Rear lift components |
| Gas-tuned front coil springs | Alignment — required post-install, buyer's responsibility |
| NX2 Nitro shocks | Extended brake lines if required by installer |
| Track bar correction bracket | Driveshaft modification if required by installer |
| All required installation hardware | Wheels or tires |
| BDS installation instructions | FOX warranty — NX2 Nitro carries BDS warranty only |
Critical Compatibility
| Configuration | Compatibility |
|---|---|
| 2019–2026 Ram 3500 4WD Gas — with factory rear overload leaf | ✅ Correct application |
| 2019–2026 Ram 3500 4WD Gas — without factory rear overload leaf | ❌ Wrong kit — order SKU 1677FS (FOX 2.0) or SKU 1677FPE (FOX 2.5 PE) |
| 2019–2026 Ram 3500 4WD Gas — with factory rear air ride | ❌ Wrong kit — order SKU 1723FS |
| 2019–2026 Ram 3500 4WD Diesel | ❌ Not compatible — different kit required |
| 2019–2026 Ram 3500 2WD | ❌ Not compatible — 4WD only |
| 2018 and earlier Ram 3500 | ❌ Different platform — kit does not apply |
| Ram 2500 — any configuration | ❌ Not compatible |
| Ram 1500 — any configuration | ❌ Not compatible |
Factory rear overload leaf, no overload leaf, and factory air ride are three separate hard fitment splits on the Ram 3500 platform. Confirm your rear suspension configuration before ordering. Contact OFAS at (469) 407-7538 before ordering if you are unsure whether your Ram 3500 has the factory rear overload leaf spring, no overload leaf, or factory air ride.
2019–2026 Ram 3500 4WD Gas 4-Inch 4-Link Shock Tier Reference
| SKU | Shock Model | Reservoir | Rear Suspension Req. | Tier |
|---|---|---|---|---|
| 1679H | NX2 Nitro — this listing | Internal | With overload leaf | Entry |
| 1679FS | FOX 2.0 Performance Series | Internal | With overload leaf | Mid |
| 1679FPE | FOX 2.5 Performance Elite | External | With overload leaf | Premium |
| 1677FS | FOX 2.0 Performance Series | Internal | Without overload leaf | Mid |
| 1677FPE | FOX 2.5 Performance Elite | External | Without overload leaf | Premium |
| 1723FS | FOX 2.0 Performance Series | Internal | Factory rear air ride | Mid |
Contact OFAS at (469) 407-7538 to confirm rear suspension configuration and shock tier before ordering.
Installation Notes
Skill Level: Advanced. A 4-link front suspension conversion on the Ram 3500 platform is a significant suspension job — not a bolt-on leveling kit. The 4-link system replaces the factory radius arm geometry entirely. A qualified suspension shop with documented Ram HD experience is required. Do not attempt DIY installation.
Required Tools:
- Full hydraulic lift rated for Ram 3500 weight
- Torque wrench
- Full socket and wrench set
- Alignment equipment or alignment shop scheduled before driving post-install
Alignment: Full front-end alignment is mandatory after installation. Do not operate the vehicle on public roads before alignment is completed.
Driveline Inspection: At 4 inches of lift via 4-link conversion, confirm driveshaft angles and U-joint operating angles after installation. Driveshaft modification may be required depending on your specific truck's configuration — confirm with your installer before the job begins.
Torque Specs: Follow BDS-specified torque values included in the installation instructions. Do not substitute generic torque values on a Ram HD platform under towing and hauling loads.
Tire Fitment: 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.
The Obsidian Take
SKU 1679H is the entry point into the BDS 4-link system for the 2019–2026 Ram 3500 4WD gas owner with the factory rear overload leaf spring. The 4-link conversion is the same across all three shock tier options in this lineup — corrected geometry, eliminated radius arm bind, improved front axle articulation, and consistent suspension performance under Ram 3500 towing and hauling loads. The NX2 Nitro shock is the only variable between 1679H and its higher-tier counterparts.
The NX2 Nitro is a functional entry-level shock — it delivers a meaningful damping improvement over a worn factory shock and handles daily driving and moderate towing without issue. It is not a performance shock. It does not carry external reservoir thermal management, the larger piston diameter of the FOX 2.0, or the advanced valving of the FOX 2.5 PE. For a Ram 3500 owner who tows at or near capacity regularly, works the truck hard off-road, or wants sustained damping performance under load — step up to SKU 1679FS for FOX 2.0 or SKU 1679FPE for FOX 2.5 PE. The 4-link geometry is identical across all three. The shock tier is where the long-term performance difference lives.
This kit is for you if: You own a 2019–2026 Ram 3500 4WD gas with the factory rear overload leaf spring, you want 4 inches of front lift with a true 4-link conversion, and the NX2 Nitro entry-level shock tier fits your budget and use case.
This kit is not for you if: Your Ram 3500 does not have the factory rear overload leaf — order SKU 1677FS or SKU 1677FPE. Your Ram 3500 has factory rear air ride — order SKU 1723FS. Your Ram 3500 is diesel — contact OFAS for the correct diesel SKU. Your truck is 2WD, a 2018 or earlier, a Ram 2500, or a Ram 1500. You tow heavy regularly or want FOX-tier damping — order SKU 1679FS or SKU 1679FPE. Confirm your rear suspension configuration before ordering — the kit is non-returnable once installed.
Common Questions
What is the difference between SKU 1679H, SKU 1679FS, and SKU 1679FPE?
All three kits fit the 2019–2026 Ram 3500 4WD gas with factory rear overload leaf and deliver the same 4-inch front lift via the same 4-link conversion geometry. The only difference is the shock tier — 1679H uses NX2 Nitro entry-level shocks, 1679FS uses FOX 2.0 Performance Series, and 1679FPE uses FOX 2.5 Performance Elite with external reservoir. If you tow at capacity regularly or want FOX-tier damping, order 1679FS or 1679FPE. Call (469) 407-7538 to confirm which shock tier fits your use case.
What is the difference between SKU 1679H and SKU 1677FS?
Rear suspension configuration. SKU 1679H is for Ram 3500 trucks with the factory rear overload leaf spring. SKU 1677FS is for Ram 3500 trucks without the factory rear overload leaf. Confirm your rear suspension configuration before ordering — this is a hard fitment split and a non-returnable error if ordered incorrectly.
How do I know if my Ram 3500 has the factory rear overload leaf spring?
The factory rear overload leaf is a supplemental leaf spring mounted above or below the main leaf pack — visible upon inspection of the rear suspension. If you are unsure, have a shop inspect the rear suspension before ordering, or contact OFAS at (469) 407-7538 and we will help you confirm before your order ships.
Does this fit my Ram 3500 diesel?
No. SKU 1679H is for the Ram 3500 4WD gas platform only. The diesel Ram 3500 requires a different kit with different front coil spring tuning. Contact OFAS at (469) 407-7538 to confirm the correct diesel SKU.
Does this kit include rear lift?
No. SKU 1679H is a front lift system only. The factory rear overload leaf suspension remains in place — rear lift components are not included.
Is a driveshaft modification required?
At 4 inches of lift via 4-link conversion, driveshaft angles change from factory. Whether modification is required depends on your specific truck's configuration — confirm with your installer before the job begins.
What warranty covers this kit?
BDS suspension components including the NX2 Nitro shocks are covered by the BDS No-Fine-Print Warranty. The NX2 Nitro does not carry a separate FOX warranty — it is a BDS-branded shock.
Manufacturer Data Disclaimer: Specifications sourced from BDS Suspension product documentation and authorized distributor data. Obsidian Forged Auto Supply is an authorized BDS Suspension dealer. Manufacturer specifications are subject to change without notice.
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.
⚠️ Non-Returnable Notice: Suspension components are non-returnable once installed. Confirm engine, drivetrain, year, and rear suspension configuration before ordering. Call (469) 407-7538 with any fitment questions before your order is placed.