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

BDS 6-Inch Lift Kit | FOX 2.0 Performance Series Shocks | Leaf Springs + 4-Inch Axle Block | Ram 2500/3500 4WD Diesel 2008 Only | SKU: BDS681FS

The BDS 6-Inch Suspension Lift Kit (SKU: BDS681FS) is a complete front and rear lift system for 2008 Ram 2500 and Ram 3500 4WD diesel models only. This kit uses a 4-inch rear axle block — distinct from BDS680FS which uses a 3.5-inch rear axle block for the same 2008 platform. The front system delivers a 6-inch lift using diesel-tuned coil springs and geometry-correct radius arm correction brackets engineered specifically for 2008 Ram HD suspension geometry. The rear system uses replacement leaf springs and 4-inch axle blocks. The included FOX 2.0 Performance Series shocks provide improved damping control, heat resistance, and ride quality. Contact OFAS at 903-347-3875 to confirm whether BDS681FS (4-inch axle block) or BDS680FS (3.5-inch axle block) is correct for your specific 2008 Ram 2500/3500 configuration before ordering.

Verified Fitment (OFAS Standard)

• Ram 2500 4WD Diesel: 2008 only
• Ram 3500 4WD Diesel SRW (Single Rear Wheel): 2008 only

Does NOT fit: Ram 2500 or Ram 3500 2007 or earlier — order BDS236FS (3.5-inch axle) or BDS266FS (4-inch axle) for 2003–2007. Does not fit Ram 2500 or Ram 3500 2009 or newer — order BDS6673FS for 2009–2013 Ram 2500 diesel. Does not fit gas models. Does not fit 2WD models. Ram 3500 DRW (Dually) — contact OFAS at 903-347-3875 to confirm DRW compatibility. Confirm model year is exactly 2008 before ordering.

4-Inch Axle Block vs. 3.5-Inch Axle Block — 2008 Kit

• BDS680FS — 3.5-Inch Axle Block: 2008 Ram 2500/3500 4WD diesel, 3.5-inch rear axle block.
• BDS681FS — 4-Inch Axle Block (this listing): 2008 Ram 2500/3500 4WD diesel, 4-inch rear axle block.

Contact OFAS at 903-347-3875 to confirm which axle block height is correct for your specific 2008 Ram 2500/3500 cab style and configuration before ordering. Ordering the wrong axle block height will result in incorrect rear lift height and improper stance.

Ram HD Diesel 6-Inch Kit by Year — Complete Guide

• 2003–2007 Ram 2500/3500 Diesel — 3.5-Inch Axle (BDS236FS)
• 2003–2007 Ram 2500/3500 Diesel — 4-Inch Axle (BDS266FS)
• 2008 Ram 2500/3500 Diesel — 3.5-Inch Axle (BDS680FS)
• 2008 Ram 2500/3500 Diesel — 4-Inch Axle (BDS681FS, this listing)
• 2009–2013 Ram 2500 Diesel — 4-Inch Axle (BDS6673FS)

Two Critical Fitment Gates

• 4WD only: Does not fit 2WD models.
• Diesel only: Coil springs and geometry tuned for diesel platform. Does not fit gas models.

Ram 3500 SRW vs. DRW — Confirm Before Ordering

The 2008 Ram 3500 was available in both SRW and DRW configurations. This kit is confirmed for Ram 3500 SRW. Ram 3500 DRW compatibility has not been confirmed — contact OFAS at 903-347-3875 to verify DRW fitment before ordering.

Front and Rear Lift System

• Front — 6-inch coil lift: Diesel-tuned coil springs + geometry-correct radius arm correction brackets — engineered specifically for 2008 Ram HD suspension geometry
• Rear — Leaf springs + 4-inch axle block: Replacement rear leaf springs and 4-inch axle blocks matched to the 2008 platform
• Track bar correction: Maintains proper axle centering at lifted height

FOX 2.0 Performance Series Shocks

• Improved damping: Significantly improved damping over factory shocks at lifted height
• Heat resistance: 2.0-inch shock body for improved heat dissipation during extended towing
• Ride quality: Tuned for 2008 Ram 2500/3500 4WD diesel platform
• FOX warranty: 1-year limited warranty

What’s Included

• Diesel-tuned front coil springs — 2008-specific
• Geometry-correct radius arm correction brackets — 2008-specific
• Track bar correction bracket
• Rear replacement leaf springs
• 4-inch rear axle blocks
• FOX 2.0 Performance Series shocks
• All required hardware and installation hardware

Technical Specifications

• SKU: BDS681FS
• Brand: BDS Suspension
• Lift Height: 6 inches (front) / matched rear via leaf springs + 4-inch axle block
• Front System: Diesel-tuned coil springs + geometry-correct radius arm correction brackets
• Rear System: Replacement leaf springs + 4-inch axle blocks
• Shocks: FOX 2.0 Performance Series
• Application: Ram 2500/3500 SRW 4WD Diesel — 2008 only
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty on shocks

Installation Notes

• 2008 model year confirmation mandatory: Confirm your Ram is exactly a 2008 model year before ordering. Do not order for 2007 or 2009 models.
• Axle block height confirmation mandatory: Contact OFAS at 903-347-3875 to confirm whether the 4-inch (BDS681FS) or 3.5-inch (BDS680FS) axle block is correct for your configuration before ordering.
• Professional installation required: Front and rear suspension lift with geometry correction requires professional installation by a qualified suspension shop.
• Alignment mandatory: Full front-end alignment required after installation.
• Driveline inspection: At 6-inch lift height, inspect driveshaft angles and U-joint operating angles after installation.
• Torque specs: All fasteners must be torqued to BDS specifications per installation instructions.
• Tire sizing: Contact OFAS at 903-347-3875 to confirm maximum tire size before ordering wheels and tires.

Installation Warning

2008 model year only — do not use for 2007 or 2009 models. Confirm axle block height (4-inch vs. 3.5-inch) with OFAS before ordering. Professional installation required. Alignment mandatory. Driveline inspection required at 6-inch lift. Does not fit gas, 2WD. Ram 3500 DRW — confirm with OFAS before ordering.

Have you confirmed your Ram 2500/3500 is exactly a 2008 4WD diesel SRW model and that the 4-inch axle block is correct for your configuration — need the 3.5-inch axle block instead? See BDS680FS. Contact OFAS at 903-347-3875 to verify before ordering.