aFe CONTROL PFADT Series Rear-Upper Spherical Bushing Rebuild kit offers Teflon-Lined FK bearings and snap rings to rebuild a single PFADT Series rear upper control arm. This item will only replace a single control arm bushing and will requrie Qty-2 of these kits to rebuild both sides. This item will only work on models with a steel sub-frame and will not fit C6 Z06 or ZR1 models.