RACE FACE PF30 X-TYPE BOTTOM BRACKETJUST PRESS IT INYour bottom bracket is what keeps your pedals moving. Eventually, you will need to replace your bottom bracket in order to keep your bike running properly. The Race Face PF30 X-Type Bottom Bracket is compatible with 24mm spindle cranksets from Race Face, Shimano, and FSA. It positions the bearings externally with the same wide spacing as threaded external mountain bottom brackets. Features Allows for the use of Race Face, Shimano, and select FSA 24mm spindle cranksets in PF30 BB shells Press-fit bearing cups work like an external type headset Precision CNC machined and anodized aluminum alloy cups Press-fit interfaces are accurate, durable, and stable | Race Face | Pf30 X-Type Bottom Bracket 68Mm/73Mm For 24Mm Spindle