they are called crush washers because thats what they do is crush down to fill the imperfections and make an air tight seal fo there is no exhaust leak so yes they are supposed to be replaced every time
however i have had my same pipes of a few times and havent replaced them yet i did get new ones when i ordered my vance and hines pipes though
This is a clearer view of the gasket. If you notice, it has a definite ridge on one side. I couldn't tell if the ones you displayed have this ridge or not.
There ARE 2 diff types of Harley gaskets too...the flat, which was has been talked about here for years, and the conical type. I tried the flat, and needed to double em up....the conical ones are 10x better imo....and I get mine at a local custom shop, not a Harley dealer...custom shop dont charge me tax...
Ask for the conical Evo ring gaskets....Ive had my pipes off at leadt 8 times now, same gaskets....the other Harley ones are more shaped like our stock, a bit thicker, and ya can reuse mebbe 3x....price difference aint much....
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