I’m Ripping Apart My Dodge Charger To Test Heidts 4-Link Rear and IFS Kits These kits promise dramatic handling improvements and "bolt-in" installation. We're about to find out how true that is.

Total Cost Involved Four Link Suspension Kit Install - The Dirty Thirty (Nine) Losing Leaves And Adding Links: TCI's Air Spring 4-Bar Upgrade. HOT ROD Staff Writer May 01, 2009.

One of them is to move to a 4-link and coilovers, like this kit from Heidts allows you to do. A 4-link is a suspension system that ties the axles to the vehicle with, you guessed it, four links.

The leaf-link system is a "cheap" 4-link that uses the forward half of the leaf spring for the other bar. The design fails when there's enough power to warp the spring. See All 14 Photos ...