Returned my 2016 BMW M235xi this month at the end of the lease so I have some parts for sale. These have been on the car since a month or 2 after the lease started and the car currently has ~6800 miles on it so most of this stuff is barely used.
Genuine BMW M Performance Carbon Fiber Exhaust Tips (set of 2) - $350.00 + shipping OBO
These were purchased new by me and used on the M Performance Exhaust. I do not know if these fit the normal 2-series exhaust. They attach using a hex bolt on the underside of the tip.
Items can also be picked up in Billerica, MA or I will meet you up to 50 miles away if you are close enough and don't want to pay for shipping. Payment via PayPal is preferred if I am shipping an item to you.