This replacement bushing kit is designed for the BDS upper control arms for the 2011-2025 GM HD2500/3500 & 2007-2026 Toyota Tundra. At the frame mounted end you'll find a pair of durometer-specific vulcanized rubber bushing preinstalled providing smooth, quiet and reliable operation bolting in directly into the factory mounts. Kit includes 2 bushing assemblys for quick and easy installation on 1 control arm. Fits lift kits with component boxes 128254, 121250, 028305, 128253, 011310, 121304, 121301, 128255.