Diamond Eye ADAPTER 3.5in ID-4in OD SS

This exhaust adapter from Diamond Eye Performance is made from stainless steel, giving it good resistance to rust and corrosion, which is important for exhaust components. It's designed to connect a 3.5-inch inner diameter (ID) pipe to a 4-inch outer diameter (OD) pipe. This is a common need when you're changing out a muffler or exhaust tip and the new part doesn't perfectly match the existing pipe size.

Using a well-built adapter like this ensures a solid connection between your exhaust system components. The stainless steel material means it should hold up well over time, even with the heat and moisture exhaust systems deal with. It's a straightforward piece that helps you get the right fit when modifying your exhaust.