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the bore of the top pulley is different
Size: M5x12mm
or navigate wet conditions regularly
NOTE** - Not compatible with XTR M9100 12-speed brakes
PF30-DUB for Sram DUB crank sets Bearing Type:Ceramic Bearings the bore of the topThis bottom bracket fits a SRAM DUB crank set on a PF30 frame. It moves the bearings out of the frame in order to make a wider and stiffer set up. Bearing wear is greatly reduced with this wider set up compared to a standard PF30 setup with spacers. Choose road seals for road use. Choose cross seals for off road use or if you frequently ride on wet roads.
