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SKU: CS-FFSP-LVL-11-HD 
- Block eliminating, Full Progressive Spring Pack
- Heavy Duty Full Replacement Leaf Springs designed for those with constant 1,000lbs in the bed
- Includes new U-Bolts and Rear Bump Stop Drops
- Provides a 1", rear high stance on Matching 2.5" Leveling Suspension Systems
- 37" Tire Fitment
- Fitment: 2011-2016 F250/350 4x4, 3.5" Axle Tube

Carli Suspension worked in conjunction with Deaver Leaf Springs to design a leaf spring pack to match our 2.5″ and 4.5″ Suspension Lifts while providing a much more predictable and supple ride with only a slight reduction from a standard 3/4-ton load capacity. The factory leaf spring packs have 2-4 heavy main springs and an immobile lower overload making for a jarring ride; replacing them with our 9-Leaf main pack and 3-Leaf overload provide much more spring rate progression. This makes for a softer unloaded ride, massive suspension travel increase and impressive capacity as the rear end compresses engaging all the springs.

Also offered, in leveling height ONLY, is our HD Spring for those with a constant bedload of 1,000lbs.

The Carli Suspension 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 inch tires, 37″ recommended, and levels the rear perfectly to match our 2.5″ & 4.5″ front suspension systems, respectively. If more lift is desired, one could pair Carli springs with lift blocks to accommodate additional lift; however, this will require brake line extensions and longer U-Bolts (not included). This spring pack delivers smoother suspension cycling in all situations: highway, off road and towing.