Greddy Wastegate Replacement Parts Nengun Performance Trust Greddy Full Turbo Kit Wastegate Type T67 25G 8cm S14 S15 RHDJapan GREDDY WASTEGATE VALVE DIAPHRAGM R C (11900311) GReddy External Wastegate Type S Forced Induction for Universal All Wastegates WASTE GATE PAGE. 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.