Old 08-27-10 | 11:49 AM
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umd
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Joined: Sep 2005
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From: Santa Barbara, CA

Bikes: Specialized Tarmac SL2, Specialized Tarmac SL, Giant TCR Composite, Specialized StumpJumper Expert HT

SRAM and shimano RDs are not interchangeable, but everything else is. If you replace your shifters, you have to have a matching RD, or use a shiftmate or something similar to change the pull ratio.
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