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The Trollinator
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722 Posts
Discussion Starter · #1 ·
Does anybody know if the Dura Ace mechs, such as the RD-7900, are backwards compatibly with earlier 10-speed setups (i.e. Ultegra ST-6600)? My RD finally bit the bullet, and it seems that I can get a RD-7900 for not a lot more than a RD-6600 (via Craigslist, et al).
 
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