Box Components Vector M30-P Race CranksThe Vector M30 P cranks have a super stiff, cold forged, 30mm, 7075 aluminium alloy, Praxis M30 spindle that fits frames with European bottom brackets, paired with the oversize hollow forged arms and 104 BCD spider. The M30 Ps include a Praxis external, BSA bottom bracket that fits frames with European bottom bracket shells. Compatible Praxis BB86 92 and BB30 PF30 bottom brackets are sold separately and available though Praxis and its dealers. An