Torque Solution Billet Aluminium Top Feed TGV Deletes are a must have for your high horse power or big turbo Subaru. These are the best solution for removing the OEM restrictive Tumbler Generator Valves. They work great on your big turbo setups where the OEM TGV get in the way. Our deletes are made from 6061 Billet Aluminium with smooth ports for maximum air flow. They come anodized and look as good as they perform. Includes new lower OEM gaskets and zinc install hardware to prevent rusting.