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Shimano Ultegra Di2 Rear Derailleur$349.99
Ride into the future with Shimano's incredible Ultegra Di2 Electronic Rear Derailleur. Instead of a cable and spring, it's driven by an intelligent servo motor, so shifts are identical, fast and precise every time. It runs off the Di2 rechargeable Li-ion battery pack (sold separately), which… [more] |
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