Shimano Deore FH-M525 135mm Rear hub

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Hub Data
Manufacturer Shimano
Model Deore FH-M525
Position Rear
Axle Type 10mm
OLN 135 mm
Spoke Interface Type J-Bend
Brake Compatibility disc, 6-bolt
Drive Interface Shimano 8/9/10/DynaSys (34.95mm)
Internal Gearing none
Dynamo Type none
Spoke Hole Diameter 2.5 mm
Left Flange Diameter 61 mm
Right Flange Diameter 61 mm
Left Flange Offset 33.5 mm
Right Flange Offset 20.5 mm
Mid-Flange Offset -6.5 mm (to the left)
Weight 512 g
Hub ID 90
Record Status Public
Created Feb 10, 2010 10:59pm
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
As measured by Karl on actual hub 12/6/11. -Karl

(2/15/13 -- These dimensions also closely match a non-series Shimano FH-M529 rear disc hub, which weighs about 432g w/o skewer.)
part image