Shimano SLX HB-M675 100mm Front hub

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Hub Data
Manufacturer Shimano
Model SLX HB-M675
Position Front
Axle Type 9mm
OLN 100 mm
Spoke Interface Type J-Bend
Brake Compatibility disc, Centerlock
Drive Interface n/a (front)
Internal Gearing none
Dynamo Type none
Spoke Hole Diameter 2.6 mm
Left Flange Diameter 44 mm
Right Flange Diameter 45 mm
Left Flange Offset 23.3 mm
Right Flange Offset 33.9 mm
Mid-Flange Offset 5.3 mm (to the right)
Weight 189 g
Hub ID 623
Record Status Public
Created Feb 21, 2020 1:25am
Contributed By Ilan
hub dimension diagram
PLEASE NOTE: Shimano publishes hub dimensions in a relatively confusing manner on 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
part image