http://www.boxcomponents.com/vector-m30-p-crankset
They’re mtb compatible. 104bcd, Just use spacers for mtb.They were used in some world cup racing and recognized for it because of the wins. Dont know if link will work, but check em out. Box Vector M30-p. They make a M35 with 35mm spindle for DH/Freeride with larger bottom brackets.