The Shimano Hollowtech II Crankarm Spacer spacer helps to get proper pressure on the bottom bracket with out having to space out the bottom bracket cups.
Goes on spindle between crank spider and right hand BB cup for triple Hollowtech II cranks
Shimano Hollowtech II triple cranks use one CR1377 on the right and one CR6774 on the left hand side
Fits Shimano Hollowtech II triple road cranks
Fits Shimano Hollowtech II triple mountain and trekking cranks made for chain case compatibility
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
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A guide to understanding and calculating bicycle gear inches.