09-06-2014, 06:13 PM
Aluminum, Ed. I did advise the buyer that I could ask my friend Russ to toss it in with the next shipment of aluminum parts that he sends out for anodizing and that it would cost a few dollars and add lead time. She said she doesn't ride in the rain enough to worry about it, and mine's been on my bike for a year like that with no ill effects.