Typically slower overdrives benefit from smaller top inlet openings and with these shoes a racer can size the inlet to there injector opening making for a smoother transition into the blower allowing for more boost.
Made from billet alum. these attach inside the blower inlet with three 10-24 bolts. Shoes can be stacked on top of each other inside the blower inlet to make the inlet size of the racers choice.
Check to make sure your SSI blower case is machined for an inlet shoe before purchasing.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.