Carli Suspension Progressive Add-A-Pack - CS-FPAP-08

As the wall was removed, the rear may sit lower with a heavy load BUT it will ride better loaded.The rear of the Super Duty can be outfitted with a replacement Full Progressive Spring Pack (reduces capacity to a light -ton) or this factory leaf-pack modifying Progressive Add-a-Pack. The O.E.M. By Deaver Leaf Spring; Smooth progressive design; Supplied with U-bolts and hardware; Provides 2.0 of lift; O.E.M. The F250 Add-a-Pack equipped systems are a nice improvement 08-10 Ford F250/350 4X4 Built in the U.S.A. The Progressive add-a-pack replaces the lower overload springs on the factory pack. The lower overload leaf is removed and is replaced with thinner gauge leaves. This is the 1 thick leaf that doesn't follow the contour of the rest of the pack. In removing this spring wall and replacing it with a mini progressive leaf pack, the capacity of the truck remains unchanged, as it's determined by the factory springs, while the progression of the rear spring rate becomes substantially more predictable. The engagement and disengagement of the spring becomes quite a bit smoother increasing both ride quality and traction. load capacity is maintained while improved ride is achieved.If Pairing to 4.5 System: Super Duties equipped with a 2 tall block from the factory will require the factory 3-5/8 tall Block to achieve a leveled stance to a 4.5 kit with the Add-a-Pack.Factory Block Part Number: 7C3Z-5598-HB, 7C3Z-5598-JBIf Pairing to 2.5 System: Super Duties equipped with a 3-5/8 tall block from the factory will require the factory 2 tall Block to achieve a leveled stance to a 2.5 kit with the Add-a-Pack.Factory Block Part Number: 7C3Z-5598-L and 7C3Z-5598-KThese packs are designed to eliminate the incredibly harsh rebound of the factory overload spring they replace helping to tame the medium to large bumps when paired with a Carli Suspension System. load capacity maintained, improved ride; Fitment: 2008-2010 F250/350 44, 3.5 Axle Tube;California Residents: WARNING Our Add-a-Pack rear springs are a proprietary design built for us by Deaver Spring MFG. This is where the F250 and F350 are a bit different. Since 2008, the main spring packs on these two trucks is different - the F250 has a lighter rate spring pack than its 350 counterpart.

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Carli Suspension Progressive Add-A-Pack - CS-FPAP-08