Description
Base Kit
Lift Height Note: 2020 Super Duties were lowered 1” from the factory when comparing to the 2017-19. Further, the Tremor Package is a factory 2” lift on the 20-22 platform putting them 1” taller than the 17-19. As these all START at different heights yet utilize the same lifts, the stated lift height is different. They will all end up measuring the same with the lift installed!
The two Systems are identical in configuration separated ONLY by the internal shock valving. The “PAP” (Progressive Add-a-Pack) suffix denotes an internal valving profile matched to those running stock rear springs. Whether the customer elects to run a factory spring, or a Carli progressive Add-a-Pack, this would be the proper selection. The “FSP” (Full Progressive Leaf Spring Pack) suffix denotes the better riding system as it is matched to the Carli Full Progressive Rear Leaf Spring that rides far better than the factory spring.
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