Thread: Ultegra Di2 or 2012 SRAM Red
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Old 04-08-12 | 04:51 PM
  #19  
eugenek
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From: Southern California
Do I understand correctly that, strictly speaking, Di2 is just levers and derailleurs (and a battery)? Are Di2 levers and derailleurs compatible with lower-level components (say, 105 crank and brake calipers)?
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