These adapter's from Rolling Big Power allow you to convert the size of your exhaust pipe to accommodate different tip applications from RBP if you current pipe will not work with the offered tip. Now you don't have to forgo that wanted RBP tip due to a non-compatible pipe size.
Get the tip you want with a proper fit with a compatible adapter from Rolling Big Power.
Note: When selecting your tip, understand that the inlet size is related to the size of the exhaust that will link to the adapter. Outlet diameter is what the adapter converts your factory exhaust size to accommodate.