Do you want the ride, without the additional height of Carli's original Full Spring Pack for your SuperDuty? Carli's Leveling Full Progressive Spring Pack is specifically designed to work in conjunction with their leveling systems to deliver a level stance but without the additional height of their 2.5" systems. The spring pack delivers smoother suspension cycling in all situations, highway, off-road, and towing. Designed to eliminate the factory rear block, these springs will reduce or eliminate axle wrap, while providing an exceptional ride, both an AND off-road. Eliminating axle wrap is imperative to eliminate wheel hop without the negative side effects of ladder bars that limit rear suspension travel.

Progressive Leaf Spring Options STANDARD:
The Carli Suspension Super Duty Full Spring Pack is designed and built to Carli 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 Carli 2.5″/3.5″ front suspension systems. Provides a 1/2", Rear High Stance to Carli Leveling Suspension Systems Heavy Duty +1000lbs: Heavy Duty Full Replacement Leaf Springs are Designed for Those with Constant 1,000lbs in the Bed Designed to Work with Carli Custom Valve Shocks These Springs DO NOT Work Well with Off-the-Shelf Valving Provides a 1", Rear High Stance on Matching 2.5" Leveling Suspension Systems 37" Tire Fitment Based on Recommended Wheels Specification of No More Than 9" Wide with 5-5.5" of Backspacing Heavy Duty +2000lbs: Heavy Duty Full Replacement Leaf Springs are Designed for Those with Constant 2,000lbs in the Bed Designed for Pop-Up Campers Like the Four Wheel Campers Hawk. This is NOT a Leaf Spring Pack designed to run unloaded, it requires the 2,000lbs load to sit at the intended height and properly function Being a far heavier spring rate than the Carli Standard Leaf Spring and designed to operate with a much higher center of gravity, 2.5" remote reservoir shocks, and custom shock tuning for optimal control are recommended Heavy Duty +3500lbs: Heavy Duty Full Replacement Leaf Springs are Designed for Those with Constant 3500lbs in the Bed Designed for CAB-OVER Campers This is NOT a Leaf Spring Pack designed to run unloaded, it requires the 3500lbs load to sit at the intended height and properly function Being a far heavier spring rate than the Carli Standard Leaf Spring and designed to operate with a much higher center of gravity, 2.5" remote reservoir shocks, and custom shock tuning for optimal control are recommended