Cusco pillowball bushing set for 2023+ Toyota GR Corolla rear upper control arm (knuckle side) is specified for the knuckle-side mounting location on the rear upper arm. The product description gives explicit vehicle and position detail, making it straightforward for 2023 and newer GR Corolla owners to identify this kit for that particular suspension link and mounting side.
Cusco 2023+ Toyota GR Corolla Rear Upper Control Arm (Knuckle Side) Pillowball Bushing Set