Carli Suspension Dodge 6" Unchained 3.5 System | 2003–2009 Ram 2500/3500 Diesel 4WD

Carli Suspension Dodge 6" Unchained 3.5 System | 2003–2009 Ram 2500/3500 Diesel 4WD | SKU: CS-DUC35-6-03

Is This for You?

This system is for the 2003–2009 Ram 2500 or Ram 3500 Diesel 4WD owner who wants Carli’s maximum-performance 6-inch Unchained 3.5 system with King 3.5 and 3.0 Bypass shocks and a full radius arm conversion. This is a professional fabrication build — not a bolt-on system. If you have a gas-powered Ram 2500/3500, stop here — diesel-specific geometry. If you have a 2010+ Ram 2500/3500, stop here — different platform. If you want a bolt-on system, see the Pintop or Backcountry listings. If you want less lift, see the 3-inch Unchained listing.

The Result

6 inches of front lift with King 3.5 and 3.0 Bypass shocks on a full radius arm conversion — maximum desert performance and front suspension travel on the 2003–2009 Ram HD platform. Purpose-built for serious off-road use on the third-gen Ram chassis.

Verified Fitment (OFAS Standard)

• Ram 2500 Diesel 4WD: 2003–2009
• Ram 3500 Diesel 4WD: 2003–2009 — confirm DRW compatibility via contact form

Does NOT fit: Ram 2500/3500 Gas. Does NOT fit 2010+ Ram 2500/3500 — different platform. Confirm year, engine, and SRW/DRW before ordering.

System Specifications

• SKU: CS-DUC35-6-03
• Brand: Carli Suspension
• System: Unchained 3.5 — 6-inch
• Lift: 6 inches (front)
• Front Shocks: King 3.5 and King 3.0 Bypass — Carli-tuned
• Conversion: Radius arm conversion
• Mount Type: Weld-on mounts — fabrication required
• Application: 2003–2009 Ram 2500/3500 Diesel 4WD
• Drivetrain: 4WD only
• Engine: Diesel only

Master Kit Components

• King 3.5 front shocks — Carli-tuned
• King 3.0 Bypass shocks — Carli-tuned
• Radius arm conversion components
• Weld-on frame mounts
• Carli front coil springs
• Confirm full kit contents via contact form or Carli spec sheet

Installation & Fabrication Notes

• Professional fabrication required: Weld-on mounts and radius arm conversion require a qualified fabricator. This is not a bolt-on system.
• Alignment: Full front alignment required after installation.
• Torque specs: Follow Carli installation manual torque specifications for all suspension fasteners.
• Break-in period: Allow 500–1,000 miles for suspension components to settle before final alignment check.

Wheel & Tire Fitment

6-inch lift opens significant tire fitment on the Ram HD platform. Confirm wheel backspacing, offset, and tire diameter with your fabricator and installer. Submit your current wheel and tire setup via the contact form for a fitment recommendation.

Is your Ram a 2003–2009 2500 or 3500 Diesel 4WD? What cab and bed configuration? Submit via the contact form and we’ll confirm fitment and fabrication requirements before it ships.