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Shimano 105 RD-5800 11-Speed Rear Derailleur
While Dura-Ace is known as the top-tier in the Shimano component line, Ultegra has been known as the workhorse and in some cases the more durable of the two -- it reaps the benefits of technological developments of Dura-Ace without the extra carbon bling. Now, the trickle-down is trickling even... Details BUY THIS PRODUCT!