Turbosmart StraightGate50 Wastegate The StraightGate50 from Turbosmart is the worlds highest-flowing external wastegate! The StraightGate50 is a zero-offset butterfly-style wastegate that allows enormous flow, almost linear control, and unparalleled boost control throughout the entire operating range. Features 50mm (1.97in) Butterfly Style Zero-Offset Valve 383.9 CFM / 10.87m3 per minute flow Stainless Steel (630) Butterfly and shaft Stainless Steel (347) Main Body Stainless Steel (Heat Treated 431) V-Band Clamps Aluminium (6262 T6 Anodised) Bracket & Actuator Turbosmart unique Locking Collar Ring Base Spring Options from 6psi to 42psi Suitable for Single or Twin Port Boost-Based Control Stainless Steel (N60) Linkages & Control Arm