Shimano Dura-Ace RD-9070 Rear Derailleur B-Axle Assembly ModelNumber=K8021 The precise and highly sensitive

The precise and highly sensitive tuned leaf springs work so well that they do not affect the performance of the bike or cyclist

Compatible with all tire types

Platform pedals with replaceable pins on an extruded CNC-machined aluminum body give a stiff and responsive feel while dual DU bushing bearings keep them turning smoothly

Color Black/Red Spoke Interface J-Bend Defined Color Black Hub Drilling 28 Front Axle 12mm Thru x 100mm Hub/Brake Compatibility Center-Lock Disc

Shimano Dura-Ace RD-9070 Rear Derailleur B-Axle Assembly ModelNumber=K8021 The precise and highly sensitiveShimano Dura Ace RD 9070 Rear Derailleur B Axle Assembly. Shimano Miscellaneous Rear Derailleur PartsFor repairs on Shimano Rear Derailleur