Bottom Bracket SET SHIMANO BB-UN26 68X113-ENG Review Posted by GiantPandaisy May 21, 2018 in Drivetrain Components FITS FC-4400,FC-6400,FC-1056,FC-A551,FC-A416,FC-3300,FC-1057,FC-1057,FC-4403,FC-A417,FC-3303,FC-M510,FC-M480,FC-M440,FC-MC20,FC-MC19,FC-M330,SQUARE TAPER SPINDLE. WEIGHT 306-312G DEPENDENT ON SPINDLE LENGTH. Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors