Praxis M30 Bottom Bracket T47 AsymmetricalThe Praxis M30 T47 Asymmetric Bottom Bracket is for Praxis M30 spindle based cranks, featuring a 30mm drive bearing and a 28mm non drive bearing with a step down design. It is compatible with specific Praxis crank models including Zayante, Alba, Girder, and Cadet. This bottom bracket is built with forged and machined heat treated alloy cups, housing durable Enduro bearings with high grade grease. A drive side wave washer manages bearing preload,