Exhausts that slip INTO the header.
Our sizing for Style 2 is the OD measurement of the exhaust.
Example: Style 2 45mm exhaust will have a 45mm OD inlet to slide into headers that are between 45.1mm ID to 46mm ID.
Style 2 is for headers with an exhaust that slides into the header. There are no relief cuts and no clamp is included since it requires reusing the factory clamp that is attached to your factory header.
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