Shimano SLX HB-M675 100mm Front hub

PLEASE NOTE: Shimano publishes hub dimensions in a relatively confusing manner on bike.shimano.com. They seem to provide the outside-to-outside flange spacing, and an overall offset of the flanges as a whole. Wheelbuilders are interested in the distance from the midpoint between locknut faces to the middle of the flange (not the inside or outside face). When necessary, I convert Shimano's data into useful spoke calculation dimensions with some simple arithmetic, and factor in 3mm thick hub flanges (an approximation). The formula is to divide spacing by two, add or subtract the overall offset, then subtract half of our assumed 3mm flange thickness. Please check the notes to see if the values for this part are derived from Shimano's published data or actual measurements of a hub specimen. -Karl

7/17/2020 -- User contribution. I fixed the flange data to reflect Shimano's published values with appropriate tweaks to reflect the centerline of the flanges. Shimano does not list PCD values for this model. Discontinued Q p/n HU6180 lists PCDs of 45mm both sides and offsets of 22 and 34mm, but I often find their data is a bit approximate. I'm leaving it at the contributors PCDs for now, but if you can confirm or deny please email me. -Karl