Enduro BK-6036 BSA68/73 Bottom BracketBSA Thread-In, Black-Oxide, ABEC-3, Bottom Bracket for BSA framesets and Shimano (24mm) Cranksets.This complete bottom bracket includes ABEC-3 radial bearings in USA-made, precision-machined aluminum cups that thread directly into the BB shell, along with a machined aluminum center sleeve and seals to protect the bearings from the elements, and selection of spacers to allow you to precisely tune your chain-line.These high quality replacement bottom brackets made by Enduro feature ABEC-3 bearings with: Grade 10 Balls Anti-corrosion Black Oxide/Magnetite treatment which provides an extra level of corrosion resistance and extended worry-free performance. LLB seals 90% fill water-proof grease Deeper grooves to accommodate the largest balls possible, providing maximum bearing contact area and greatly increased bearing life.
