Designed to improve the air flow capabilities of the early S.U. Carburetors, these air horns are manufactured from specially developed aluminum castings, and are direct bolt-ons to 70-72 S.U.'s. Air horns are fully compatible with ITG* and K&N Filters, and are sold individually. Also known as Velocity Stacks.
Diameter (Outer Top): 70mm
Diameter (Inner Top): 50mm
Diameter (Inner Bottom): 44mm
Measurement Note: The outer top diameter of 70mm above is measured at the apex of the top of the horn, just before the edge curves down.