Came off a truck I bought. The RideTech RidePro Big Red Manifold features 3/8 valves that flow faster than the standard RidePro Manifold. If you want to raise and lower your vehicle quickly, this is the manifold for you. The Big Red Manifold is designed to operate 4 air springs (front and rear). The manifold has 8 – 3/8 actuators on top, 4 to inflate and 4 to deflate.