17mm vs 19mm master brake cylinder, pros and cons? Options

[914 RZ-1]

I need a new M/C. Stock is 17mm, but it seems everyone is selling 19mm. I'll get a firmer pedal and less stroke with the 19mm, correct? Is this good or bad or personal preference?

What are the advantages/disadvantages of both?

Thanks!
-Jeff
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[Eric_Shea]

In a "real world" application, the feel between a 17mm and a 19mm is (as @76-914 mentions) basically indistinguishable. I'm certain it can be measured but you "really" won't noticed it. There will be no leg fatigue whatsoever. I'll buy you a protein shake the next time I see you if you get leg fatigue pressing your brake pedal. (IMG:style_emoticons/default/cheer.gif)

This 17 vs. 19 is just a non-issue that gets way overblown via the Itnerweb thingy.

The real issue (as the OP is finding) is there are no more 17's being made. None of the suppliers carry them. And so goes the 17... so should threads like this. (IMG:style_emoticons/default/biggrin.gif)

I've also found that a "harder" pedal gives me the best modulation. The feedback and feel in the foot is extremely precise with a harder pedal. YMMV (IMG:style_emoticons/default/wink.gif)

(fire away)

[mgp4591]

[quote name='Eric_Shea' date='Mar 13 2023, 12:22 PM' post='3064794']
In a "real world" application, the feel between a 17mm and a 19mm is (as @76-914 mentions) basically indistinguishable. I'm certain it can be measured but you "really" won't noticed it. There will be no leg fatigue whatsoever. I'll buy you a protein shake the next time I see you if you get leg fatigue pressing your brake pedal. (IMG:style_emoticons/default/cheer.gif)

The bottom line on this subject is, just buy your 19mm m/c from PMB and you'll be happy! (shameless plug...) (IMG:style_emoticons/default/shades.gif)