Turbosmart Big Bubba 21 inHg spring is the firmest standard option for Big Bubba blow-off valves, giving a high seat pressure choice for aggressive boost control and minimal unwanted venting. Select these springs when a very stiff release is desired for demanding turbo applications. They integrate with Turbosmart Big Bubba hardware as a direct-fit spare for owners seeking stronger valve seating.
Turbosmart BOV Bubba 21 inHg Spring