The clamp is hidden away under the carbon in order to not stand out once its fitted. There are two different sizes.
63-67mm inlet and 67-72mm inlet. On most BMW's the standard tip size is 63mm and the M performance Exhaust tips are 67mm. Please check that they will fit. If you are interested in them in a different size send us a messages as more than likely we can get you a set made up! There is more colours and style on our page so feel free to check them out! Drop us a message and we might be able to get you a discount.