Carli Suspension worked in conjunction with Deaver Leaf Springs to design a leaf spring pack to match Carli's 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.

KIT FEATURES:
FULL PROGRESSIVE LEAF SPRINGS FOR 2.5 LIFTS Block eliminating, Full Progressive Spring Pack "Light" 3/4-Ton Capacity, Max Bed-load 2,000lbs. 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: 2008-2016 F250/350 4x4, 3.5" Axle Tube Fitment: 2005-2007 F250/350 4x4, 3.5" Requires front hanger relocation FULL PROGRESSIVE LEAF SPRINGS FOR 2.5 LIFTS-HEAVY DUTY 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 Fitment: 2008-2016 F250/350 4x4, 3.5" Axle Tube Fitment: 2005-2007 F250/350 4x4, 3.5" Axle Tube Requires front hanger relocation FULL PROGRESSIVE LEAF SPRINGS FOR 4.5 LIFTS Block eliminating, Full Progressive Spring Pack "Light" 3/4-Ton Capacity, Max Bed-load 2,000lbs. Includes new U-Bolts and Rear Bump Stop Drops Provides a 1", rear high stance on Matching 4.5" Suspension Systems 37" Tire Fitment Fitment: 2005-2016 F250/350 4x4, 3.5" Axle Tube KIT DETAILS: 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.