Turbosmart 50mm Pro-Gate50 external wastegate. Combining a compact body, superior flow and industry leading temperature resistanc, the Pro-Gate50 is a market leader for reliability and performance. Solid one-piece Coated Stainless Steel Valve and shielded silicon nomex diaphragm ensures excellent heat handling capabilities. Various Base Pressures can be easily achieved from 5psi to 33psi.