Sram xx1x01x1 ceramic jockey wheelssram are passionate about cycling loved by riders who live and breathe bicycles to real cycling enthusiasts there is nothing more gratifying then achieving the ultimate ride the best part is sram just keep making it better replacement sram rear pulley jockey wheelsfeaturesceramic bearing x synctsram xx1 and x0111 speed compatible onlyweight for the pair is 24gbuy sram xx1 jockey wheels from chain reaction cycles the worlds largest online bike store