Factory Finds These products are backed by the same lifetime warranty as our current lineup but may feature retired colors, previous-generation graphics, alternate packaging, or discontinued configurations. The Fit Kit for our ThreadFit™ 30 with 30mm spindle cranks is available here. The Fit Kit for DUB cranks is available here. ThreadFit™ 30 comes with a Center Sleeve for 73mm BB shell. For 68mm shell - sleeve PBB082 is required(included in Fit Kit #2 for DUB Road cranks).