I would like to upgrade my brakes on my 04 999s, any one done this before and can offer advice on what is needed i.e new discs/calipers etc and what size?
Has your 999S already got Ohlins forks? If so, you could just replace the fork bottoms and get 100mm spaced radial calipers to match? You can use the same discs, I think they're all 15mm offset.