BDS 6-Inch Lift Kit | FOX 2.0 Shocks | Leaf Springs + 4-Inch Axle Block | Ram 2500/3500 4WD Gas 2008 Only

BDS 6-Inch Lift Kit | FOX 2.0 Shocks | Leaf Springs + 4-Inch Axle Block | Ram 2500/3500 4WD Gas 2008 Only | SKU: 687FS

Is This for You?

This kit is for the 2008 Ram 2500 or Ram 3500 SRW 4WD gas owner who wants 6 inches of lift with a 4-inch rear axle block. This kit covers 2008 only — not 2007 or earlier, not 2009 or newer. There are two 2008 gas 6-inch kits: SKU 687FS (4-inch axle block, this listing) and SKU 686FS (3.5-inch axle block). Confirm which axle block height is correct for your cab style and configuration before ordering. If your Ram 2500/3500 is diesel, stop here — order SKU 680FS or 681FS for 2008 diesel.

The Result

6 inches of front lift via gas-tuned coil springs and geometry-correct radius arm correction brackets, with matched rear lift via replacement leaf springs and a 4-inch axle block — engineered specifically for the 2008 Ram HD gas platform. The truck clears larger tires, sits aggressive, and maintains consistent geometry. FOX 2.0 shocks deliver improved damping over factory at this lift height.

Verified Fitment (OFAS Standard)

• Ram 2500 4WD Gas: 2008 only
• Ram 3500 4WD Gas SRW: 2008 only

Does NOT fit: Ram 2500/3500 diesel — order SKU 680FS (3.5-inch axle) or SKU 681FS (4-inch axle) for 2008 diesel. Does not fit 2WD. Does not fit 2007 or earlier. Does not fit 2009 or newer — different platform. Ram 3500 DRW (Dually) — contact OFAS to confirm DRW compatibility. Confirm model year is exactly 2008 before ordering.

System Specifications

• SKU: 687FS
• Brand: BDS Suspension
• Front Lift Height: 6 inches — gas-tuned coil springs + geometry-correct radius arm brackets
• Rear Lift Height: Matched via replacement leaf springs + 4-inch axle blocks
• Shocks: FOX 2.0 Performance Series
• Application: Ram 2500/3500 SRW 4WD Gas 2008 only
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty

Master Kit Components

• Gas-tuned front coil springs
• Geometry-correct radius arm correction brackets
• Replacement rear leaf springs
• 4-inch rear axle blocks
• FOX 2.0 Performance Series shocks
• Track bar correction bracket
• All required installation hardware

Installation & Fabrication Notes

• Professional installation required: 6-inch lift with leaf spring replacement requires a qualified suspension shop.
• Alignment mandatory: Full front-end alignment required after installation. Do not drive on public roads before alignment is completed.
• Rear block installation: 4-inch axle blocks must be installed per BDS specifications — confirm U-bolt torque specs and axle centering after installation.
• Driveline inspection: At 6-inch lift, inspect driveshaft angles and U-joint operating angles after installation.
• Torque specs: Torque all fasteners to BDS specification per included installation instructions. Do not estimate.

Wheel & Tire Fitment

At 6-inch lift on the Ram 2500/3500 gas platform, typical fitment runs 37–40-inch tires depending on wheel offset and backspacing. Confirm maximum tire diameter and wheel specs with your wheel/tire supplier before ordering.

Installation Warning

Application-specific. Confirm 2008 Ram 2500/3500 SRW 4WD gas before ordering. Confirm 4-inch axle block is correct for your configuration — if unsure, contact OFAS before ordering. Does not fit diesel, 2WD, 2007 or earlier, or 2009 or newer. This product is non-returnable once installed.

Is your Ram 2500 or 3500 exactly a 2008 4WD gas? Do you need the 4-inch axle block (this kit, SKU 687FS) or the 3.5-inch axle block (SKU 686FS)? Gas or diesel? Submit your year, model, engine, drivetrain, and cab style via the contact form and we’ll confirm the correct SKU before it ships.