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PostPosted: Sun Oct 28, 2012 9:35 pm 
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Joined: Fri Feb 21, 2003 1:00 am
Posts: 471
On the current 7900 model rear derr. do any of the after-market bolt/tuning

kits have any merit? Or has Shimano used ti and aluminum in place of steel

in their bolts as part of the way to reduce the weight of their current derr.?

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PostPosted: Mon Oct 29, 2012 6:24 am 
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in the industry

Joined: Mon Mar 05, 2012 7:28 am
Posts: 510
I tuned my DA group not to long ago. Here is a topic on it.

viewtopic.php?f=3&t=106537&hilit=tuned+7900+group

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Www.crypticcycles.com Custom carbon frames, bar/stem combos, repair and component tuning.


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