Race Face Signature Xs Isis Bottom Bracket

This is a high-performance, multi-use Bottom Bracket that is light enough for XC, but tough enough for extreme use.
It has a CNC machined, heat-treated, hollow, bored out M15 cro-moly spindle, forged and CNCed aluminium cups and heat-treated stainless steel crank stoppers.
It also has 8 independant seals to keep out the muck, adjustable cups that fit both 68 and 73mm shells and allow you to adjust the chain line and proprietory non side-loading design.