Shimano CARTRIDGE BOTTOM BRACKET SET BB-UN55 NON-SPLINED TYPE AXLE BSA 68-107MM W/O FIXING BOLT Review Posted by GiantPandaisy June 10, 2018 in Drivetrain Components This fits your . Make sure this fits by entering your model number. Maintenance free sealed cartridge unit Alloy non-drive side cup Tapered Spindle add bullets Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors