The AFCO leaf spring sliders can eliminate the up and down movement of the rear spring eye caused by shackles moving through their arcs during suspension travel. Consequently, the rear suspension's loading points displace less during suspension movement. Sliders, depending on their installed angle, generally reduce the shackle effectæ and provide more consistent spring rates than shackles. There is no shackle effect to the rate of the spring when the slider is mounted to point directly at the front spring eye center(this is the preferred mounting position). Since sliders are usually more rigid than shackles, they have less tendency to bind laterally during cornering. In general, sliders improve the handling consistency and predictability of leaf spring equipped race cars.
