I didnt think they did, Not like the conventional Type you would get on a 80 or 90 series... It will be part of the Brake balance set up , Controlled electronically No doubt.... Or even some type of Magical Brake pressure distribution valve.... Someone with a bigger brain than mine will be along to explain soon, Im sure.... Good luck...(ps where are you? someone could be close by to have a look)
Thanks higgy yeah,,, looks like it's something to do with the very expensive complicated master cylinder thingy