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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[914 RZ-1]

Thanks for the replies! I did search this site for info, BTW.

Perhaps I should have been more specific; in looking for 17mm, they don't seem to be readily available, or the bore size is not indicated. The research I did on this site had old info for links to suppliers that are no longer around. There does seem to be more 19mm M/C's available, so I thought I would ask if there were any major differences or issues.

My daily driver is a Chevy Silverado (power assisted, ABS), so I expect the brakes on my 914 to be different. I just want to make sure that if I use 19mm M/C I'm not damaging anything or causing any issues.

I'm searching part number 91435501200 (I have the warning contact).

I won't bore you with links to all the places that come up in a search that have them, but they are either N/A or not the right one (lots of 19mm replacement for stock 17mm, hence my original question), or I can't tell if they are the right one (different part number, usually for later cars).

URO makes one that is usually around $100 ±$20 or so. Is this one any good?

Hope that helps clarify things.
-Jeff
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