Those are called rivets which are extremely durable and strong when installed correctly using a rivet gun, however, standard stainless bolts and nuts sourced from a local hardware store will work just as well.
I'm new to MINIs, but so far outmotoring.com has been my go-to source. Aaron has been more then helpful on several occasions. I'll continue to give him my business and would recommend anyone do the same.
Tyler Frasca
For my first purchase with Outmotoring I bought a set of Gen 2 Clear Side Marker Lights and the product, the company, and their customer service is excellent! I will definitely use Outmotoring again for all my future MINI product needs!
Kevin O
Oumotoring has been of great help and technical advise on upgrading my R53 S.
Went through a step by step approach with Aaron installing a pulley, DDM air filter, Miltek Exhaust, Koni Shocks, …..
The MINI became much more fun to drive and stayed a practical daily driver for us.