In Cabin? No this is done from the underbody. It does require a full flush of the front system. Pending you have the right tools and a lift its not too difficult at all.

 

Thanks, reason I was asking was this: http://www.pelicanparts.com/techarti...Hydraulics.htm

Was wondering if replacing the clutch master cylinder (not slave) was doable primarily from in-cabin. But now after reading I see that the BBi kit doesn't actually touch the clutch master cylinder, right (whereas the EVOMS, AMS, etc. kits replace it)?