Shimano releases a new Ultegra rear derailleur with mountain biking clutch technology

New Ultegra rear derailleur has mountain biking clutch technology, but does it signal Shimano's one by intent?

Shimano's road developers have long borrowed from the company's extensive mountain biking technology, including in the launch of both its Dura-Ace and Ultegra groupsets.

But now the brand is launching an updated mechanical and Di2 Ultegra rear mech. It still retains the same mountain biking Shadow technology that moved it closer to the cassette and further out of harm's way, but it also now has a clutch mechanism.

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