BK-54119 – ABEC-3 Bottom Bracket Bearing Kit for BB30/BB386 type (30mm spindle) cranksets and BB30 framesets (or any other BB standard with a 42mm OD bearing) Enduro′s entry level BB bearing kit, though many steps up when compared to other products on the market, we couple our ABEC-3 radial bearings along with all of the necessary seals and spacers to complete a precise, professional installation. This kit should work for any bottom bracket that has 42mm OD bearings, including BB30, BB30A, PF30, PF30A, BBRight, and BB386 and any crankset with a 30mm OD BB spindle. Engineered specifically for bicycle use, Enduro ABEC-3 bearings feature 52100 High-Carbon Chromium alloy races paired with grade 10 Balls, LLB seals and 90% fill high-pressure, water-proof grease. All Enduro radial bearings are engineered with deep grooves to accommodate the largest balls possible, providing maximum bearing contact area and greatly increased bearing life. For the easiest removal and installation of this bearing kit, we recommend the BRT-002 30m x 42mm bearing tool. This tool allows you to quickly remove and install bearings with a just few twists of the wrist while the BB is still in the bike.