I should be pulling the Two Bothers slip on that was on my bike when I bought it in October. I’m changing to a Delkevic full system, so I’d like to sell the current slip on once I get it off. It’s carbon. I have no idea how old it is, but it isn’t very new. Sounds great. And I will sell it cheap. Hope to get it off this weekend. If you have interest, please TEXT me ONLY. 301.509.1233. I’ll send out pics. Gary