e.thirteen LG1+ Bottom Bracket: Our threaded BBs adapts e*thirteen cranks with 30mm spindle to standard BSA threaded BB shells. Custom seals, grease fill & custom angular contact, titanium nitride bearings are designed from the ground up for top-notch durability & smooth spinning. Gravity BB for all e 13 DH cranks Ti Ni custom angular contact sealed bearings increase BB life Cup material EXA+ Aluminum Built for XC/ Trail 68/73mm or 83mm Weight 99g