Premium Quality. When you’re adding performance parts to your vehicle, you can’t go wrong by installing parts from the folks that know it best. All parts are of OEM quality. This HMS Cluster Support Plate reinforces back of case to help stabilize rear cluster bearing bore in case prolonging life of cluster and fifth gear assembly. Application. This HMS T5 Cluster Support Plate is specifically designed for use on T5 transmissions. This kit will include the necessary metric hardware for installation.