The brand new RG-45 replaces the legendary Racegate in Turbonetics wastegate lineup. Built with the latest technology, such as a stainless stell base, inconel high-temp valve, high-temp fluro-silicone diaphragm, and v-band connections all in a very small frame size. Like its name suggests, the gate has a 1.77"/45mm vlave and is good for powerplants making up to 750 HP.