05-07 FORD F250/F350 FULL PROGRESSIVE SPRING PACK

Carli Suspension collaborated with Deaver Leaf Springs to design a leaf spring pack that pairs perfectly with our 2.5″ and 4.5″ suspension lifts, providing a more predictable and supple ride with only a slight reduction from standard 3/4-ton load capacity.

Factory leaf spring packs feature 2–4 heavy main springs and an immobile lower overload, resulting in a stiff and jarring ride. Our 9-leaf main pack and 3-leaf overload provide progressive spring rates, giving a softer unloaded ride, increased suspension travel, and impressive load capacity as the rear compresses and engages all springs.

The Carli Super Duty Full Spring Pack is designed and built to our specifications, supporting up to 15″ of wheel travel. The center pin is relocated to accommodate up to 38″ tires (37″ recommended) and perfectly levels the rear to match our 4.5″ front suspension systems. This spring pack delivers smoother suspension cycling in all situations, including highway, off-road, and towing.