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The Shimano XT RD-M772 Rear Derailleur B-Axle Assembly is a factory replacement part, and it consists of the parts necessary to attach the rear derailleur's bracket axle to a derailleur hanger. This assembly also includes a B-tension screw to fine tune the position of the rear derailleur for sprocket clearance and optimal shifting performance.
This product was added to our catalog on September 27, 2024