Radial brake master & radial clutch master. Both 19x18 from Brembo. Brembo fluid reservoirs. After installing the Motowheels clipons I found that the nose fairing was hitting the brake master coffin reservoir and distorting the fairing. The old brake master would sometimes mush on me when doing light continued braking in heavy traffic. The new master supplies a much more powerful braking action and has pretty good feel too. I put on the clutch master because I got a good deal on it and because it would "match". Stupid "bling" tech vanity I suppose. One thing about the clutch master though is that the pull feel of the lever increased. That is, the lever is now harder to pull than the stock setup. Not bad hard but noticable. I can't say how the 16x18 size would work or feel.