BBright Thread Together Bottom Bracket. Spindle Interface Type Shimano Hollowtech II. Bottom Bracket Shell I.D. 46. BB Shell Width (mm) 79. We are out East at 3063 Columbia Ave. - Lancaster PA, 17603 & out West at 3225 Grande Vista Dr. - Newbury Park, CA 91320 & 165 Design Place, #105 - Sparks, NV, 89441.
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