Fits carbs to 1-7/8" Includes two seals Designed to replace the original rubber manifold and seals Eliminate intake leaks due to cracks and loss of sealing due to manifold flex at high RPM Can be used with S&S Cycle Super B and E carburetors as well as stock carburetors with a two bolt mounting pattern Kit includes front and rear manifold mounting flanges, manifold O-rings, and aluminum spacer shims