BDS 6-Inch Lift Kit | FOX 2.0 Shocks | Leaf Springs + 4-Inch Axle | Ram 2500/3500 4WD Diesel 2003-2007

BDS 6-Inch Lift Kit | FOX 2.0 Performance Series Shocks | Leaf Springs + 4-Inch Axle Block | Ram 2500/3500 4WD Diesel 2003–2007 | SKU: BDS266FS

The BDS 6-Inch Suspension Lift Kit (SKU: BDS266FS) is a complete front and rear lift system for 2003–2007 Ram 2500 and Ram 3500 4WD diesel models. This kit uses a 4-inch rear axle block — distinct from BDS236FS which uses a 3.5-inch rear axle block for the same platform. The front system delivers a 6-inch lift using diesel-tuned coil springs and geometry-correct radius arm correction brackets. 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 BDS266FS (4-inch axle block) or BDS236FS (3.5-inch axle block) is correct for your specific Ram 2500/3500 configuration before ordering.

Verified Fitment (OFAS Standard)

• Ram 2500 4WD Diesel: 2003–2007
• Ram 3500 4WD Diesel SRW (Single Rear Wheel): 2003–2007

Does NOT fit: Ram 2500 or Ram 3500 gas. Does not fit Ram 2500 or Ram 3500 2WD. Does not fit Ram 2500 or Ram 3500 2008 or newer. Does not fit Ram 1500 or Ram 1500 Classic. Ram 3500 DRW (Dually) — contact OFAS at 903-347-3875 to confirm DRW compatibility before ordering. Confirm model year, drivetrain, engine, cab style, and SRW vs. DRW before ordering.

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

• BDS236FS — 3.5-Inch Axle Block: Same 2003–2007 Ram 2500/3500 4WD diesel platform, 3.5-inch rear axle block. For specific cab configurations or spring pack heights requiring a 3.5-inch block to achieve proper rear lift height and stance.
• BDS266FS — 4-Inch Axle Block (this listing): Same platform, 4-inch rear axle block. For specific cab configurations or spring pack heights requiring a 4-inch block.

Contact OFAS at 903-347-3875 to confirm which axle block height is correct for your specific 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.

Two Critical Fitment Gates

• 4WD only: This kit is engineered for 4WD Ram 2500 and Ram 3500. Does not fit 2WD models.
• Diesel only: Coil springs and geometry are tuned for the diesel engine platform. Does not fit gas models.

Ram 3500 SRW vs. DRW — Confirm Before Ordering

The 2003–2007 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 deliver 6 inches of front lift height. Geometry-correct radius arm correction brackets maintain proper caster and driveline alignment at lifted height.
• Rear — Leaf springs + 4-inch axle block: Replacement rear leaf springs and 4-inch axle blocks match the front lift height while maintaining rear load capacity and proper stance.
• Track bar correction: Maintains proper axle centering at lifted height.

FOX 2.0 Performance Series Shocks

• Improved damping: Significantly improved damping control over factory shocks at lifted height
• Heat resistance: 2.0-inch shock body for improved heat dissipation during extended towing
• Ride quality: Tuned for the 2003–2007 Ram 2500/3500 4WD diesel platform
• FOX warranty: 1-year limited warranty

What’s Included

• Diesel-tuned front coil springs
• Geometry-correct radius arm correction brackets
• 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: BDS266FS
• 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 2003–2007
• Warranty: BDS No-Fine-Print Warranty + FOX 1-year limited warranty on shocks

Installation Notes

• Axle block height confirmation mandatory: Contact OFAS at 903-347-3875 to confirm whether the 4-inch (BDS266FS) or 3.5-inch (BDS236FS) axle block is correct for your specific 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. Do not drive on public roads before alignment is completed.
• 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

Confirm axle block height (4-inch vs. 3.5-inch) with OFAS before ordering — wrong block height causes incorrect stance and improper lift. Professional installation required. Alignment mandatory. Driveline inspection required at 6-inch lift. Does not fit gas, 2WD, or 2008 and newer. Ram 3500 DRW — confirm with OFAS before ordering.

Have you confirmed your Ram 2500/3500 is a 2003–2007 4WD diesel SRW model and that the 4-inch axle block is correct for your configuration — contact OFAS at 903-347-3875 to verify before ordering.