The Synergy sway bar end link spacer kit is designed to prevent the housing of the forged link making contact with the coil bucket when your suspension is cycling. The spacer kit is designed to be used with the Synergy 8515-11 & 8515-12, but can also be used on any Synergy End links where the sway bar end links need to be moved for clearance. The kit comes with the zinc plated spaces, washes, and longer bolts for a 0.5" spacer fitment.