So I have an exhaust question probably not pondered before. What material are the main pipes on an RS v-twin made of? I thought they were made of steel, galvanized or otherwise because I found what appeared to be rust on portions of the tubes. But, steel, is made with iron, and iron is magnetically attractive. These tubes including the welds have no magnetic attraction. So are these stainless tubes, or something else? Upon further investigation, my finding are incorrect, the long forward tube is magnectic at the head fitting(where it bolts on) and the short rear tube is marginally magnetic throughout. Different materials do not make for a long lasting part.
20190715_145849.jpgpipes after cleaning for ceramic coating