SHIMANO BB-ES51 Octalink V2 Bottom Bracket Review Posted by Pelicandy October 5, 2018 in Drivetrain Components Octalink V2 compatible Labyrinth seals keep contamination out of bearings Standard BSA threading 22mm hollow spindle Shimano Reference Number: BB-ES51 the smooth sealed bearings of the Shimano BB-ES51 will keep you pedaling smoothly for miles. Random Products Quarq DZero Aluminum Power Meter Crank Arms –... Single Speed Crankset Set 58T 170mm Crankarms 130 ... Wipperman 108 Chain (1-Speed, Nickel, 1/8-Inch, 11... KMC Z33 NP Chain 5/6 Speed 1/2″ x 3/32″... Cycling Outdoor Recreation Parts & Components SHIMANO Sports & Outdoors