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Not compatible with Campagnolo 10 speed
and GRX 1x 12-speed rear derailleurs
improved shifting accuracy
efficient power transfer thanks to the advanced ceramic bearings that reduce friction and improve longevity
It fits 11 and 12 speed Ultegra and Dura Ace derailleurs
BB30-24 for Shimano cranks Bearing Type:Corrosion Resistant Ceramic Bearings Not compatible with Campagnolo 10Fits a Shimano road crank to a 68mm wide BB Shell or a Shimano MTB crank to a 73mm wide BB Shell. Choose road bearings for road bikes, cross bearings for mountain bikes and cyclocross. Also for road bikes if you frequently ride on wet roads.
