Chris King now offers a solution for 30mm spindle cranks, yep you heard that correctly… ThreadFit 30 is ready. A silky smooth, long-lasting bottom bracket built around their very own angular contact bearings that wear in instead of out. Fully serviceable and backed King’s 5-year built-to-last warranty this bottom bracket will outlast your bike. Built to ultra tight aerospace tolerances, King uses machined Delrin spindle sleeves to create a perfect, and precise, fit between cranks and frame, providing ultra low drag, and a butter smooth feel. With a large range of conversion kits the ThreadFit30 is ready for a wide selection of cranks.