Rev9 RS SERIES 44MM V Band Type Wastegate Turbo 5 10 11 21 PSI Wastegates GREDDY WASTEGATE VALVE DIAPHRAGM R C (11900311) Catalogue Search Greddy Wastegate Type C11 (1.1 1.5KG CM2) Darkside Motoring. 50mm Wastegate Type R 11 (1. 1 1. 5 kg cm2) GReddy Wastegate Valve A part that controls boost pressure by bypassing exhaust gas from the exhaust manifold before passing through the turbocharger and suppressing the turbocharger's work. Required when using a turbocharger without an actuator valve. The lineup includes Type R with a 50 valve diameter, Type C with a stainless steel housing and heat insulator with a 50 valve diameter, and Type C High Flow with a 60 valve diameter. Various types can be selected depending on the primary exhaust pressure and target boost pressure. We also have a reinforced spring that is necessary when changing the boost pressure to a higher direction. We respond to the voices of users who pursue the limit of driving on closed courses. When increasing the turbine capacity, the actuator method will not have enough capacity and will not be able to release the increased exhaust gas pressure. GReddy wastegate valve has a large capacity and excellent durability, and promises stable boost pressure control.