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PostPosted: Sun Nov 23, 2014 3:37 am 
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Joined: Wed Apr 11, 2012 3:40 am
Posts: 449
I see the 2015 revolution front dérailleurs can be had with or without "S2". What exactly is it? Campy's website isn't helping and my google fu is failing me.


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Posted: Sun Nov 23, 2014 3:37 am 


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PostPosted: Sun Nov 23, 2014 4:02 am 
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Joined: Sat Feb 07, 2009 5:52 am
Posts: 257
It refers to the tab or lever which bolts onto the top of the mounting. The tab is adjustable to sit against the seat tube and stiffen the base assembly for improved shifting.


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PostPosted: Sun Nov 23, 2014 4:52 am 
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Joined: Tue May 04, 2010 1:02 am
Posts: 28
It is a stiffener that presses against the seat tube to counter the flex of thin-walled tubing, should your bike have such an issue. The new FD does up to 45Nm of shifting force to the big ring versus the 32Nm of the 2014 and below design.


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