Falken's Bolt-on Schackle Relocation allows you to maintain the comfort of the rear suspension and extends the life of the springs.
When installing a higher rear suspension, the shackle angle is often disturbed, which is supposed to be about 45 degrees. Instead, it often ends up at a straighter angle, which means that the leaf spring alone takes most of the blows. The result is a harsh ride and that the springs are dulled over time as they are designed to be helped by the swing of the shackle.