BDS 4-Inch 4-Link Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Gas 2019–2026 | With Factory Rear Overload Leaf | SKU: 1677FPE
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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
Flagging before writing:
- SKU is 1677FPE — confirmed
- No phone number in source — (469) 407-7538 applied per standing rule
- Fuel type: Gas only — diesel explicitly excluded
- Drivetrain: 4WD only — 2WD explicitly excluded
- Generation: 2019–2026 — 2018 and earlier excluded
- Rear suspension: WITH factory rear overload leaf — non-overload variant is 1676FPE
- Lift height: 4 inches front — via 4-link conversion
- Suspension type: 4-link front conversion — not a radius arm upgrade
- Shocks: FOX 2.5 Performance Elite — external reservoir, gas-tuned — confirmed
- Tire clearance: not specified in source data — field does not appear
- Driveline inspection required post-install — confirmed
- External reservoir routing confirmation required — confirmed
- Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty — confirmed
- Professional installation required
- Alignment mandatory post-install
- userPreferences contain internal Blueprint scaffold labels — do not appear in output per standing rule
Executing clean.
BDS 4-Inch 4-Link Lift Kit | FOX 2.5 Performance Elite | Ram 3500 4WD Gas 2019–2026 | With Factory Rear Overload Leaf | SKU: 1677FPE
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Page Title: BDS 4in 4-Link FOX 2.5 PE Ram 3500 Gas Overload Leaf | 1677FPE
Character count: 62 ❌ — trimming
BDS 4in 4-Link FOX 2.5 PE Ram 3500 Gas 2019-2026 | 1677FPE
Character count: 60 ✅
Meta Description: BDS 4-inch 4-link lift kit, FOX 2.5 PE external reservoir shocks, 2019–2026 Ram 3500 4WD gas with factory rear overload leaf. Gas-tuned springs. SKU 1677FPE.
Character count: 156 ❌ — trimming
BDS 4in 4-link lift, FOX 2.5 PE shocks, 2019–2026 Ram 3500 4WD gas with factory rear overload leaf. Gas-tuned springs. SKU 1677FPE.
Character count: 132 ✅
URL Handle: bds-4in-4-link-fox-2-5-pe-ram-3500-4wd-gas-overload-leaf-2019-2026-1677fpe
Full URL: obsidianforgedautosupply.com/products/bds-4in-4-link-fox-2-5-pe-ram-3500-4wd-gas-overload-leaf-2019-2026-1677fpe
The BDS 1677FPE is a 4-inch 4-link front lift kit with FOX 2.5 Performance Elite external reservoir shocks for the 2019–2026 Ram 3500 4WD gas with factory rear overload leaf springs. The 4-link front suspension conversion corrects geometry, eliminates the radius arm bind inherent in the factory setup, and improves articulation at 4-inch lift height. Gas-tuned front coil springs deliver 4 inches of lift at the correct spring rate for the Ram 3500 gas platform. FOX 2.5 PE external reservoir shocks deliver advanced valving and heat-managed damping for sustained off-road and towing performance.
This kit has four hard fitment splits before it applies to your truck.
First — rear suspension: this kit is calibrated for Ram 3500 trucks with factory rear overload leaf springs. If your Ram 3500 does NOT have factory rear overload leaf springs, order 1676FPE — the overload and non-overload kits are not interchangeable.
Second — engine: gas-tuned coil springs. Ram 3500 diesel requires a different kit — gas and diesel springs are not interchangeable.
Third — generation: 2019–2026 only. The 2018 and earlier Ram 3500 is a different platform and is not compatible.
Fourth — drivetrain: 4WD only. Ram 3500 2WD is not compatible.
Component Specifications
| Component | Specification |
|---|---|
| SKU | 1677FPE |
| Brand | BDS Suspension |
| Lift Height | 4 inches (front) |
| Suspension Type | 4-link front conversion |
| 4-Link Components | 4-link front suspension conversion components |
| Front Springs | Gas-tuned front coil springs |
| Shocks | FOX 2.5 Performance Elite — external reservoir, gas-tuned |
| Hardware | All required installation hardware — included |
| Fuel Type | Gas only |
| Drivetrain | 4WD only |
| Rear Suspension | With factory rear overload leaf — required |
| Application | 2019–2026 Ram 3500 4WD Gas — with factory rear overload leaf |
| Warranty | BDS No-Fine-Print Warranty + FOX 1-year limited 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 |
| FOX 2.5 PE shocks with external reservoirs | Extended brake lines if required by installer |
| All required installation hardware | Driveshaft modification if required by installer |
| Non-overload variant (see 1676FPE) |
Critical Compatibility
Four fitment confirmations required before ordering.
| Configuration | Compatibility |
|---|---|
| 2019–2026 Ram 3500 4WD Gas — factory rear overload leaf confirmed | ✅ Correct application |
| 2019–2026 Ram 3500 4WD Gas — no factory rear overload leaf | ❌ Wrong kit — order 1676FPE |
| 2019–2026 Ram 3500 4WD Diesel | ❌ Not compatible — diesel requires different kit |
| 2019–2026 Ram 3500 2WD | ❌ Not compatible — 4WD only |
| Ram 3500 2018 or earlier | ❌ Not compatible — different platform |
| Ram 2500 | ❌ Not compatible — different platform |
| Ram 1500 | ❌ Not compatible — different platform |
Not sure if your Ram 3500 has factory rear overload leaf springs? Text (469) 407-7538 before ordering.
With Overload Leaf vs. No Overload Leaf — Which Kit Do You Need?
| With Overload Leaf — 1677FPE | No Overload Leaf — 1676FPE | |
|---|---|---|
| Rear Springs | Factory overload leaf — present | Standard rear springs — no overload pack |
| Front System | 4-link conversion | 4-link conversion |
| Shocks | FOX 2.5 PE | FOX 2.5 PE |
| Interchangeable? | No — order based on confirmed rear spring config | No — order based on confirmed rear spring config |
How to confirm your rear spring configuration: Visually inspect the rear axle leaf spring pack. An overload pack has an additional leaf that sits above the main pack and contacts the axle only under heavy load. If you are unsure, text (469) 407-7538 with your VIN and we will confirm before your order ships.
4-Link Conversion vs. Radius Arm Upgrade — Why It Matters
The factory Ram 3500 front suspension uses radius arms that create bind under articulation at lifted height — a geometry compromise that limits suspension travel and affects ride quality under load. The BDS 4-link conversion replaces this architecture entirely, correcting geometry, eliminating bind, and improving articulation at 4-inch lift height. This is a more thorough front suspension solution than a radius arm upgrade and the correct specification for the platform at this lift height.
Installation Notes
Professional installation is required. The 4-link conversion 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.
Driveline inspection is required after installation. Inspect driveshaft angles and U-joint operating angles after the 4-link conversion is installed. Confirm angles are within acceptable operating range before towing.
External reservoir routing. Follow BDS and FOX installation instructions for reservoir placement. Avoid pinch points, heat sources, and moving components during routing. Improper reservoir placement can damage the reservoir line and void the FOX warranty.
Rear overload leaf configuration confirmation is mandatory before ordering. This kit is calibrated for Ram 3500 trucks with factory rear overload leaf springs — it is non-returnable once installed. Confirm your rear spring configuration before the order ships. Text (469) 407-7538 if you need help confirming before ordering.
Torque all fasteners to BDS specification. Torque specs are included in the BDS installation instructions. Do not estimate torque values on a 3500-class platform.
FOX shock break-in period. Allow FOX 2.5 PE shocks to complete the manufacturer-recommended break-in period before aggressive off-road or heavy towing use.
Text (469) 407-7538 to confirm rear spring configuration, engine, and drivetrain before ordering.
The Obsidian Take
The BDS 1677FPE is the correct kit for the 2019–2026 Ram 3500 4WD gas owner with factory rear overload leaf springs who wants the most complete front-end geometry solution at 4-inch lift with premium FOX 2.5 PE damping. The 4-link conversion addresses geometry more completely than a radius arm upgrade — eliminating bind, correcting caster, and improving articulation in one architecture change. The FOX 2.5 PE external reservoir handles the towing and off-road loads a 3500 platform actually sees, maintaining consistent damping where a standard shock body begins to fade.
If your Ram 3500 does not have factory rear overload leaf springs, order 1676FPE — the overload and non-overload kits are calibrated differently and are not interchangeable. Installing the wrong kit for your rear spring configuration affects ride quality and rear geometry under load — exactly the condition a work truck or tow rig encounters most.
If your Ram 3500 is diesel, gas-tuned springs are not the correct rate for the diesel engine weight. If it is a 2018 or earlier, this platform kit does not apply.
Overload leaf confirmed, gas, 4WD, 2019–2026, FOX 2.5 PE — the 1677FPE is the complete, correctly-specified front-end solution for the Ram 3500 that tows hard and demands the geometry to match.
Common Questions
How do I confirm my Ram 3500 has factory rear overload leaf springs?
Visually inspect the rear axle leaf spring pack. An overload pack includes an additional leaf that sits above the main pack and contacts the axle only under heavy load — visible as an extra leaf that does not contact the axle at rest. Text (469) 407-7538 with your VIN if you need confirmation before ordering.
What is the difference between 1677FPE and 1676FPE?
Both kits fit the 2019–2026 Ram 3500 4WD gas and deliver 4 inches of front lift with the same 4-link conversion and FOX 2.5 PE shocks. The difference is rear spring calibration — 1677FPE is for trucks with factory rear overload leaf springs and 1676FPE is for trucks without. They are not interchangeable.
What is the difference between a 4-link conversion and a radius arm upgrade?
A radius arm upgrade replaces the factory radius arms with heavy-duty BDS arms, correcting caster and reducing bushing bind. A 4-link conversion replaces the entire front suspension link geometry — more complete geometry correction, improved articulation, and eliminated radius arm bind. The 4-link is a more thorough front suspension solution.
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. Professional installation is required.
What warranty does this kit carry?
BDS suspension components carry the BDS No-Fine-Print Warranty. FOX 2.5 PE shocks carry a FOX 1-year limited warranty.
Verified Fitment
| Year | Make | Model | Drivetrain | Engine | Rear Suspension | Compatibility |
|---|---|---|---|---|---|---|
| 2019–2026 | Ram | 3500 | 4WD | Gas | With overload leaf | ✅ Correct application |
| 2019–2026 | Ram | 3500 | 4WD | Gas | No overload leaf | ❌ Order 1676FPE |
| 2019–2026 | Ram | 3500 | 4WD | Diesel | Any | ❌ Not compatible |
| 2019–2026 | Ram | 3500 | 2WD | Any | Any | ❌ Not compatible |
| 2018 and earlier | Ram | 3500 | Any | Any | Any | ❌ Different platform |
| Any | Ram | 2500 | Any | Any | Any | ❌ Not compatible |
| Any | Ram | 1500 | Any | Any | Any | ❌ Not compatible |
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 rear spring configuration, engine, and drivetrain before ordering.