This M30 BB is a press fit bearing with 41mm Diameter…

-Praxis M30 Road crank into BB86 ROAD.  (86.5mm W) 
-Praxis M30 MTB crank into BB90 (89.5mm W) or BB92 (92mm W)
-Praxis M30 DH crank into 104.5mm W or 107mm W  DH frame
-BOX M30 BMX crank into BB86 BMX frame (86.5mm W)

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READ THE FULL SPEC BELOW : If you still have questions, that’s ok!  We’re here to help as we know the compatibility & technical details can be confusing.    So just click on our Live Chat below or give us a call at 831-423-7464  M-F 8am-5pm PST.