Performance Bike
Shimano Hollowtech II Crankset Arm Spacer (Right) (6.5mm)
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From Performance Bike
Shimano Hollowtech II Bottom Bracket Parts Features: Goes on spindle between crank spider and right hand BB cup for triple Hollowtech II cranks Shimano HollowtechII triple cranks use one CR1377 on the right and one CR6774 on the left hand side Fits Shimano HollowtechII triple road cranks Fits Shimano HollowtechII triple mountain and trekking cranks made for chain case compatibility