i run a single speed set up on the rear think il give chain reaction a ring and see whts up with the freehub body iv seen on there if not how would i take the old freehub body of my halo any ideas . and another thing mate cant buy or sell on here cause im not validated yet how do you get validated on here biddle hers the link to the freehub body see wht you think http://www.chainreactioncycles.com/Models.aspx?ModelID=25986