Forge Actuators are made of billet aluminum and stainless steel construction. Viton silicone o-ring sealed piston-based internals, no diaphragm to fail. 4 interchangeable internal base spring pressure ranges, fully rebuildable, and comes with a lifetime warranty. We recommend you adjust your actuators during install to get your desired PSI.

Spring Rates

Green, #8 Spring 5-10 PSI
Yellow, #10 Spring 9-15 PSI
Blue, #12 Spring 14-18 PSI
Red, #14 Spring 17.5-20 PSI

Please Note, that depending on which turbo kit you're using, some setups might require modified or custom brackets.