Shimano Square Taper Bottom Bracket UN55 68 – 113 mm, Silver [Misc.] Review Posted by GiantPandaisy June 13, 2018 in Drivetrain Components This fits your . Make sure this fits by entering your model number. Product code: SA-S200127 2014 Shimano BB-UN55 Bottom Bracket Silver 68 x 113mm British Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors