Shimano's Ultegra SL Rear Derailleur benefits from trickled-down Dura-Ace technology so you get to enjoy Pro Tour quality without being on a Pro Tour budget. It's built tough of cold-forged aluminum with Shimano's wide-link design that increases rigidity for precise, smooth shifts. Plus, the fluorine-coated pivots minimize friction for nearly effortless shifting. The Ultegra SL uses oversize, sealed-bearing pulleys, too.
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